Shopify Discount and Pricing Tools Compared (2026): The Four Categories That Get Confused

"Shopify pricing tools" and "Shopify discount tools" are search terms that lump together at least four different categories of software, each solving a genuinely different problem. One category tells you what price converts best. One keeps your catalog repriced against cost. One lets you build checkout rules without writing code. And one enforces a profit floor on the order after every discount has resolved. Picking the wrong category is the most common mistake we see, because the tools sound interchangeable in a feature list and are not interchangeable in practice.

By Herzel Mishel, Founder of Agentis · Last updated May 29, 2026

The four categories, and why the distinction matters

Before you compare individual products, sort them into the job each one is built to do. The categories barely overlap:

1. Price experimentation and testing. Software that A/B tests prices and offers to find what maximizes a chosen metric. The question it answers is "what price should we charge?"
2. Catalog repricing. Software that recalculates and pushes prices across your catalog from cost inputs or competitor signals, usually on a schedule. The question it answers is "are all my list prices still correct given today's costs?"
3. No-code Functions and checkout-rule builders. Tools that let a merchant configure Shopify Functions or checkout UI logic without writing Rust or Wasm by hand. The question they answer is "how do I build this discount or checkout rule without an engineer?"
4. Real-time margin enforcement at checkout. Software that evaluates the fully resolved cart against a live cost model and blocks the specific order if it would ship below your profit floor. The question it answers is "should this exact order, at this exact discounted price, be allowed through?"

Here is the thesis of this whole piece: only category 4 blocks a specific below-floor order at checkout after discounts resolve. The other three are upstream of that moment. They set prices, optimize prices, or build the rules, but none of them looks at the final cart total against your actual landed cost and stops the order. That is not a knock on them. It is just a different job. Most healthy stores end up using one tool from category 1, 2, or 3 alongside category 4, because the upstream and the enforcement layers are complementary, not substitutes.

Category comparison at a glance

Tool	Category	Core job	Pricing	Blocks a below-floor order at checkout?
Intelligems	Price testing	A/B price and offer testing, optimizing Profit Per Visitor	~$59 to $749/mo	No
Pricemaster	Catalog repricing	Rule-based repricing with per-band minimum-margin floors	$399+/mo	No
Margin Master	Catalog repricing	Cost-driven catalog repricing	$9.99/mo	No
PowerX	No-code Functions builder	Build Shopify Functions without code; Scripts to Functions migration	$39 / $99 / $299/mo	Only the rules you build
Checkout Blocks	Checkout UI builder	First-party checkout UI, upsells, and field logic	Free for Plus	Only the rules you build
Agentis	Margin enforcement	Real-time profit-floor enforcement against live COGS/freight/FX	Custom (Plus)	Yes

Category 1: Price experimentation and testing (Intelligems)

Intelligems is the reference tool here, and it is very good at what it does. It runs controlled A/B tests on prices, shipping thresholds, and offers, then reports the winner against a focal metric. Its headline metric is Profit Per Visitor, which is a smart choice because it pushes you past raw conversion rate toward contribution. Pricing runs from roughly $59/mo at the entry tier up to about $749/mo for higher-volume plans.

What Intelligems is genuinely best at: discovering the price and offer structure that maximizes profit per visitor with statistical rigor. If you are guessing at price points or running gut-feel promotions, this is the category that replaces the guessing with evidence.

What it does not do: enforce anything at checkout. A price test tells you that $48 outperformed $45 last month. It does not look at the cart a specific customer is about to check out with, after they stacked a welcome code on a clearance item, and decide whether that order clears your margin floor. Testing and enforcement are different layers. Most stores that test prices still need something downstream to catch the edge-case orders that no test was designed around.

Category 2: Catalog repricing (Pricemaster, Margin Master)

Repricers keep your list prices correct as costs move. They are the right tool when your problem is "my published prices have drifted away from my costs," especially across a large SKU count.

Pricemaster is the more sophisticated of the two. It is a rule-based repricer that supports per-band minimum-margin floors, so you can guarantee that no SKU's list price drops below a defined margin. It starts around $399/mo and is positioned as a catalog operations tool rather than a Plus checkout product, so it carries no Plus-specific or checkout-time positioning. Its strength is disciplined, automated list-price management with a margin guardrail baked into the repricing logic.

Margin Master sits at the affordable end at $9.99/mo. It is a cost-driven catalog repricer: feed it costs and a target margin, and it keeps your prices aligned. For a small store that just wants list prices to track costs without manual spreadsheet work, it does that job cleanly and cheaply.

What repricers do not do: they govern the list price, not the transaction. A per-band margin floor on the catalog guarantees the sticker price is healthy. It says nothing about what happens after a customer applies a discount code, stacks a second promotion, or triggers free shipping on a low-margin item. The repricer has already done its job by the time that cart exists. Enforcing the floor on the resolved cart is a separate, checkout-time job.

Category 3: No-code Functions and checkout-rule builders (PowerX, Checkout Blocks)

This category exists largely because of a deadline. Shopify Scripts, the Ruby-based checkout customization layer, froze for editing on April 15, 2026 and shuts down completely on June 30, 2026. Everything those scripts did has to move to Shopify Functions or checkout UI extensions. These builders make that move accessible to merchants who do not want to hand-write Rust compiled to Wasm.

PowerX (by CodeInspire) is a no-code builder for Shopify Functions. It lets you configure Functions-based logic such as discounts and validations through a UI instead of code, and it ships an explicit Shopify Scripts to Functions migration tool, which is exactly what stores staring down the June 30 deadline are searching for. Pricing is tiered at $39, $99, and $299/mo. Its strength is turning the Scripts migration and ongoing Functions authoring into a configuration task rather than an engineering project.

Checkout Blocks is now a first-party Shopify app (Shopify acquired it from Gadget in 2024) and is free for Plus merchants. It is a checkout UI and upsell builder: custom fields, content, upsells, and field-level logic in the checkout and Thank You pages. For Plus stores that want to enrich the checkout experience without code, being first-party and free makes it an easy default.

What builders do, and do not do: they let you build rules, including margin-ish rules if you wire them up. The catch is in the phrase "the rules you build." A Function or a checkout block enforces exactly the logic you author and maintain, using the data you can get into it. If you want a rule that says "block this order if landed margin after all discounts is below 18 percent," you still have to source live COGS, current freight zone cost, and FX, get that data into the Function's tight execution budget, keep the rule versioned, and own it forever. The builder is the toolbox. It does not bring the live-cost data or the margin model. That distinction is exactly where category 4 begins, and it is why the Cart and Checkout Validation Function on its own is necessary but not sufficient for margin enforcement.

Category 4: Real-time margin enforcement at checkout (Agentis)

Agentis is built for one job the other three categories leave open: looking at the fully resolved cart, at the moment of checkout, and deciding whether that specific order should be allowed through. It evaluates the order against a live cost model (real-time NetSuite COGS, actual freight cost, current FX) and blocks the order if it would ship below your profit floor. It also enforces MAP violations and coupon-stacking that breaches the floor, and it does this in under 10 milliseconds so checkout performance is not affected.

The difference from category 3 is the data layer, not the enforcement primitive. The enforcement primitive is the Shopify Cart and Checkout Validation Function, which any builder can technically invoke. What makes margin enforcement hard is feeding that function a trustworthy, live answer to "what does this order actually cost us right now," inside a roughly 5 millisecond, 64 kilobyte Wasm budget. Agentis manages that live-cost data layer and the policy model so the validation function has the right number to decide on. That is the part PowerX and Checkout Blocks do not provide, because it is not what they are for.

To be clear about scope: Agentis does not test prices (that is Intelligems), it does not reprice your catalog (that is Pricemaster or Margin Master), and it is not a general checkout UI builder (that is Checkout Blocks). It is the enforcement layer that sits underneath whatever pricing strategy those tools produce.

How the categories fit together

The healthiest stacks we see combine an upstream tool with the enforcement layer:

• Intelligems + Agentis: test your way to the best price per visitor, then enforce a floor so no edge-case discounted order slips below cost.
• Pricemaster + Agentis: keep list prices margin-safe at the catalog level, then enforce the floor on the resolved cart after discounts and shipping.
• PowerX or Checkout Blocks + Agentis: build your checkout rules and migrate off Scripts with a no-code builder, and use Agentis for the specific rule that needs a live-cost data layer it would be painful to build and maintain yourself.

None of these are either/or choices. They are different rungs of the same ladder.

How to choose

Match the tool to the problem you actually have:

1. You do not know what price converts best. Start with price testing (Intelligems).
2. Your list prices drift from your costs across many SKUs. Use a repricer (Pricemaster for per-band floors, Margin Master for a low-cost cost-driven option).
3. You need to migrate off Shopify Scripts or build checkout rules without an engineer. Use a no-code builder (PowerX for Functions and the migration tool, Checkout Blocks for first-party checkout UI on Plus).
4. Profitable on paper, but specific discounted orders still ship below cost. That is a margin enforcement gap, and it is the category 4 job.

Frequently asked questions

What is the difference between a Shopify pricing tool and a discount tool?

In practice the terms get used interchangeably, but the useful split is by job. Pricing tools either test prices (Intelligems) or reprice your catalog from cost (Pricemaster, Margin Master). Discount and checkout-rule tools build the logic that applies offers at checkout (PowerX, Checkout Blocks). Margin enforcement (Agentis) is a fourth category that decides whether the final discounted order clears your profit floor.

Can Shopify Functions or Checkout Blocks block an unprofitable order?

They can block any rule you build and maintain, using the data you can get into the function. The hard part is not the block. It is sourcing live COGS, freight, and FX and getting a trustworthy landed-cost number into the function's tight execution budget. Builders give you the toolbox; they do not bring the live-cost data layer. See the Cart and Checkout Validation Function explainer for why.

Do I need Agentis if I already use Intelligems or a repricer?

Often yes, and they are complementary. Testing finds the best price and a repricer keeps list prices healthy, but neither inspects the specific cart a customer checks out with after stacking discounts. If more than a few percent of your orders ship below floor, the gap is enforcement, not pricing strategy.

What happens to my checkout logic when Shopify Scripts shuts down?

Shopify Scripts froze for editing on April 15, 2026 and shuts down on June 30, 2026. Any margin or discount logic in Scripts has to move to Shopify Functions or checkout UI extensions. PowerX offers an explicit Scripts to Functions migration tool. If the logic you are migrating is margin enforcement specifically, you also need a live-cost data layer behind the function, which is the part Agentis provides.

What to do this week

• Pull the share of orders in the last 90 days that shipped below your profit floor after all discounts. If it is over a few percent, you have a category 4 gap.
• Review the deep dives: Agentis vs Intelligems, Agentis vs PowerX, Agentis vs Pricemaster, Agentis vs Checkout Blocks, and Agentis vs Margin Master.
• If you are migrating off Scripts, read the Cart and Checkout Validation Function primer before you pick a builder.