Price comparison sites: which ones really pay off for your store

Most guides to price comparison sites are written for shoppers: where do I find the cheapest offer? For a merchant, that is the wrong question. A merchant wants to know on which platform they actually make money after click costs, which products sell there at all and how much work the connection takes. That is what this article is about.

The most important price comparison sites at a glance

For most stores, the order in which to test is clear: first Google Shopping and idealo, then one or two further platforms depending on the range. Connecting everything at once spreads budget and attention before you know what pays off.

What has changed in recent years

If you looked into price comparison sites a few years ago, it is worth updating your picture. idealo discontinued its direct checkout, which let customers order directly on the platform, at the end of 2022. Purchases are once again made in the merchant’s store. The Ladenzeile platform is now history too. In return, idealo is expanding its advertising formats and has been represented with its own app in ChatGPT since March 2026.

For Google Shopping, the most important change happened some years ago: in Europe, Shopping ads are served via so-called comparison shopping services. If you run your ads through such a service, you pay less for the same clicks. How this works is shown on the page about arboro CSS.

Calculate first, then list

Most price comparison sites charge for every click, regardless of whether a purchase follows. Whether a platform pays off is therefore decided by a simple calculation:

• A click costs €0.40 in your category.

• 2 out of 100 visitors buy. The conversion rate is 2%.

• So each order costs €20 in click costs.

• With a basket value of €80 and a 25% gross margin, €20 is left per order.

In this example, the store makes exactly nothing on the platform. If the conversion rate rises to 3%, the cost per order falls to just over €13, and the platform becomes profitable. If it falls to 1%, the store loses money on every sale. That is exactly why every platform must be measured individually, at the level of products and categories, not just as a total.

Which products work on price comparison sites

Price comparison sites live from customers being able to compare a specific product. Branded products with a unique product identifier such as GTIN or EAN, where your price is competitive, therefore work best. Own brands, bundles, personalised products and items priced well above the market have a hard time. For them, Google Shopping is usually the better channel, because relevance, images and reviews also play a part there.

A smart selection often achieves more than connecting the entire range. Many stores make money on price comparison sites with part of their products and lose it with the rest.

The product feed decides

Every platform receives your products via a data feed. Its quality determines whether products are matched correctly and whether they sell:

• Unique identifiers: GTIN or EAN, brand and manufacturer part number. Without them, your offer won’t end up on the right product.

• Meaningful titles: brand, model and the most important attributes such as size, colour or capacity.

• Correct prices and shipping costs: If the price or shipping costs on the platform differ from the store, customers get annoyed, and it can become a problem under competition law.

• Current availability: A click on a sold-out product costs money and brings nothing.

• Good images: your own product photos on a neutral background, more on this in the entry on Google Images.

• Frequent updates: The faster prices move in the market, the more often the feed has to run.

How well your feed is set up today is shown by the feed check-up.

Feed management with ChannelPilot

If you serve more than one or two platforms, you quickly reach the limits of your store’s built-in tools. Every platform wants the data slightly differently, and without central reporting nobody knows which channel sells which products profitably. This is where feed management comes in.

arboro is a partner of ChannelPilot. It turns store data into a feed for every channel, with separate rules per platform, for example to exclude products with too little margin or to adapt titles for a particular platform. The reporting shows, per channel and per product, what clicks have cost and what they have brought in. On top of that comes monitoring of competitor prices on the platforms. ChannelPilot can be connected to Shopware and Shopify.

Connecting Shopware and Shopify

In Shopware 6, feeds are created via a dedicated sales channel of the product comparison type. There are templates for the common formats that can be adapted, for example to add fields or exclude products. For several platforms with different requirements, a feed tool is usually the cleaner solution.

In Shopify, Google Shopping can be connected via the Google & YouTube app. However, this only works reliably for a store with one language and one domain. If you run several languages or domains, such as a German and an English store, you need a feed tool such as ChannelPilot, as you do for all other price comparison sites. In both systems it is important that variants are passed on cleanly as separate offers with their own GTIN, image and price.

More on the technical foundations of both systems under Shopware SEO and Shopify SEO.

Google Shopping is not a classic price comparison

Google ranks Shopping results not only by price, but by relevance to the search query. Images, reviews, shipping costs, delivery time and the quality of the product data all play a part. A store with a slightly higher price can therefore rank ahead of a cheaper one. Products appear free of charge in product listings and in the Shopping tab, and additionally as ads via Google Ads. A Google Merchant Center account is required. Which other surfaces Google offers is described in the entry on Google optimisation.

Price comparison sites and AI assistants

More and more customers ask ChatGPT, Claude, Gemini or Perplexity where to get a product cheaply. The assistants draw on product data from the web, on price comparison sites and directly on store pages. If you have clean structured data with price, availability and shipping costs on your product pages and are listed on the relevant platforms, you have a good chance of appearing in these answers. More on this under Generative Engine Optimization.

Which platform suits your store?

The honest answer: only a test with clean measurement will tell. A sensible approach looks like this. Start with Google Shopping and idealo, using a well-maintained feed and a selection of products where price and margin are right. After four to eight weeks, evaluate the cost per order per platform and product group. Then expand what pays off and switch off what only buys clicks.

Price comparison sites and Shopping for your store

Want to know on which platforms your Shopware or Shopify store can make money? The arboro team checks range, margins and feed, sets up Google Shopping and the right price comparison sites and evaluates the channels on an ongoing basis. More on this under Google Ads for Shopware and Shopify.

Image source: @kebox – stock.adobe.com