Best Basket Optimiser

Partly. Any signed-in account can see its own delivered total — what the list costs delivered, from how many stores, and how much less that is than buying each card's cheapest copy separately — up to 5 times a day. The store-by-store plan, with the best one-store and two-store orders beside it and a link for every card, is an OP Compare Premium tool.

Yes — that's the whole point. Buying each card from its individual cheapest store usually spreads an order over a dozen stores and buries the saving in postage. Best Basket searches store combinations for the lowest total including each store's postage, and with Premium it also shows the best one-store and two-store orders beside it. The postage is each store's own checkout rate, measured for orders of different sizes and values to addresses across your market (in the US: New York, Chicago, Dallas and San Francisco): the store's rate name, whether its name says it's tracked, where a cheap untracked letter stops being offered, and the order value where postage goes free, if it ever does. It starts from your region and prices it at the address we measured there, or at the dearer of the two either side of it; leave it unset and it uses each store's highest. An order bigger than any we measured is marked 'from', a store we haven't measured yet (and TCGplayer, where every seller charges their own postage) is marked as an estimate, and the store's own checkout is always final.

Any decklist or card list, one card per line — the exports of the common One Piece deck builders ("4xOP01-024"), plain quantities ("4 OP01-024"), names with numbers ("4 Monkey.D.Luffy (OP01-024)") or plain names. A card number picks that card's standard print; a "#" product id from /deck pins a Parallel or another printing. Section headers such as Leader, Characters and DON!! are skipped, and any line we can't match is listed back to you rather than dropped. A list is priced up to its first 200 lines, and the page tells you when yours runs past that. Signed in, you can also send your watchlist.

It's the cheapest the search finds, not a proof — with free-shipping thresholds there's no fast exact answer. It is never dearer than buying each card's cheapest copy separately, or than the single-store and two-store orders shown beside it so you can compare. The single-store order is the cheapest one store offers; the two-store order is the cheapest split the search finds, shown only when it beats buying everything from one store. One exception: where an order is bigger than any the store's checkout was measured on and its postage was still rising with size, the search allows for it to keep rising, so an order resting on that store's 'from' figure can show a slightly lower total than the one it picks.

Premium lets you set the lowest condition you'll accept: Near Mint only, Lightly Played or better, or anything. Best Basket and the deck price watch then only use listings at or above it, so the cheapest plan can't quietly include a heavily played copy. Each line still shows its condition. Each store's price is the best-condition copy it lists, so if nothing at that grade is in stock the card is shown as not covered rather than filled with a played copy. Without Premium your total counts each store's copy in any condition and tells you how many played copies that includes. A new session starts on Lightly Played or better, and your last choice is remembered.

No — the free deck and list pricer at /deck needs no account at all if you only want per-card prices. Premium is only needed for Best Basket's store-by-store plan.