Cart Optimizer for Cardmarket

Finds a cheaper Cardmarket cart for your wants list: cheaper cards, fewer sellers, applied to your cart in one click.

Cardmarket's Shopping Wizard doesn't always build the cheapest cart. It can pick a more expensive copy than you need, and spread your cards across more sellers than it has to, each one charging shipping. Cart Optimizer finds the cheapest cart it can for your wants list, shows you exactly what your final cart would be, and applies it to your Cardmarket cart when you say so. Cheaper cards, fewer sellers, one click. Free to use. WHAT IT DOES • Shows you the plan before anything changes. The new total, the saving, how many of your wants it fills, and every card you'd end up with (set, condition, language). Your cart stays exactly as it is until you press Apply. • Applies it in one click, then checks it. Watch each change land in your cart. Afterwards, it re-reads your cart and compares it with the prediction, seller by seller, so you know the saving is accurate. If Cardmarket won't add a card (it may have just sold), it stops, tells you exactly what state your cart is in, and can find a new plan without that offer. • Looks beyond your cart. It checks other sellers' offers too, and weighs card prices against shipping and other costs. Sometimes the cheapest route is a slightly pricier card from a seller you're already buying from. • Two ways to use it. Find savings on just the cards already in your cart, or tick "Add the wants your cart is missing" and it finds the cheapest cart for your whole wants list, even starting from an empty cart. • Keeps your rules. Your wants list's language, condition, set, edition and foil settings are respected, and you can use the same seller filters as in Cardmarket: minimum reputation, seller type, location and delivery time. • Runs in the background. Close the panel and carry on browsing: the toolbar icon shows progress and tells you when it's done, or when Cardmarket needs you to pass a security check. • Works with euro and pound accounts, shipping to any Cardmarket country, currently for Magic: The Gathering and Yu-Gi-Oh!. HOW TO USE IT 1. Open your Cardmarket cart (log in as usual). 2. Click the extension's icon to open its side panel, select your wants list in the dropdown, and press "Find savings". To cover wants not in your cart too, tick "Add the wants your cart is missing" and press "Find the cheapest cart". 3. It reads the pages it needs in your own browser, usually a few minutes. You can close the panel while it works. 4. Check the plan and the cards you'll get, then press Apply. When it's done, check your cart on Cardmarket and pay as normal. HOW BIG A LIST A run reads a limited number of Cardmarket pages. The determining factors are wants list length (a want for multiple copies still counts as just one want), and whether it looks at sellers outside your cart. • With "Also look at sellers outside your cart" on: lists of up to around 100 to 120 wants. • With it off: up to around 200 wants or more. A bigger list still gets a plan, made from the pages read before the limit, but it may miss some savings. To cover it all, consider unticking that option, or splitting the list in two. PRIVACY • It works in your own logged-in browser. It never asks for or sees your password, and never touches payment. • The only website it reads is cardmarket.com. Your name, address, account name and balance are removed from every page before anything is sent. • If Chrome says it can "read and change" your data on Cardmarket: the only thing it changes is your cart, and only when you press Apply. • The pages it reads (listings, prices, sellers, shipping) go to the extension's own server, which works out the cheapest cart. No ads, no analytics, nothing sold. • The code isn't minified or obfuscated, so anyone can read exactly what it does. FEEDBACK If something breaks or a result looks off, please use "Send feedback" in the panel. It helps a lot. Always check your cart on Cardmarket before you pay: the extension changes your cart, but what you buy is your decision. Cart Optimizer is an independent tool, not made by or affiliated with Cardmarket, Wizards of the Coast or Konami. Magic: The Gathering and Yu-Gi-Oh! are trademarks of their owners.