The same basis
Two products are compared on what the buyer gets: content, dose and specifications.
We bring together prices and product data from 129 shops, make them comparable and send ready-to-buy customers straight to the shops.
Prices from 129 shops, including
Protein powder, creatine, supplements, recovery and laptops are five markets where it is hard to see what you get for your money. Each site brings its whole market together in one place and sends buyers on to the shops.

Protein powder compared on the price per 100 g of protein.

Creatine compared on the price per day, converted to active creatine.

Vitamins and supplements compared on the price per daily dose.

Massage guns, red light, ice baths and saunas compared on price including shipping and on specifications.

New laptops compared on price and specifications, configuration by configuration.
Proteinpris went live in September 2026. The other four sites followed within two weeks.
proteinpris.dkProtein powder
kreatinpris.dkCreatine
recoverypris.dkRecovery and sleep
tilskudspris.dkVitamins and supplements
laptoppris.dkLaptopsEvery shop describes its products in its own way. We read the descriptions, convert the figures to the same basis and show the products' properties side by side. Buyers make their decision with us and buy from the shop.
Two products are compared on what the buyer gets: content, dose and specifications.
Our buying guides and needs-based product recommendations take visitors safely from doubt to ready to buy.
Shipping and fees are shown next to the price, so buyers see what the product costs delivered.
A product's ranking in our tables and lists is decided by price and properties. No shop can pay for a better position.
Whether you want your products listed, a product corrected or to use our figures, the answer and the quickest way to reach us are below.
If you have a product feed through an affiliate network, we can read your prices from day one: price, previous price, stock status and barcode for every product. We work through these seven networks:
Adtraction
TradedoublerIf you are not on a network, we can still read the prices on your product pages and link straight to you. Each new shop takes time to read correctly, so we prioritise shops that give buyers something new: products no one else sells, or lower prices.
Your shop appears under every product you sell, with price, shipping, stock status and a button straight to your page. The order is decided by price and properties and cannot be bought. The sites earn a commission when a visitor buys through a link.
Send us a link to the product on our site and on yours. Then we can see whether the error is in your data or in how we read it. If it is ours, we fix it for every product written the same way.
If you do not want your products shown, we are happy to remove them from our sites. Tell us whether it is the whole shop or individual products, and send links so we get the right ones. We always let you know when it is done.
We care about complete product descriptions and specification lists, so our users get the full picture when they compare products on our sites. Declarations and specifications straight from you make sure your products appear correctly and strongly wherever they are shown.
We have stored the prices from every collection since 14 September 2026, so we can see how prices in a category have moved and which shops are cheapest. Tell us what you want to know, and we will come back with what we can share.
We have deep market insight, up-to-date prices and many interesting figures across our five sites. Figures from the sites may be used with a date and a source reference with a link. If you need a figure explained or pulled out for a story, write to us.
Write to us. We usually reply within a few days.
Founder and developer
Birk built prissider.dk and all five sites from the ground up: the engine that collects and shows product data and prices from 129 shops, the websites that support buyers on their way to a purchase, and the tools that help visitors find the products that suit them.
Birk is behind everything you can see on the five sites and everything they cover. Every email is answered by Birk personally within a few days.