I just glanced this over and from an observer standpoint, this is really cumbersome. Yugioh does not have a good search engine as far as I know where you can just filter and see it all laid out nicely with card effects, rarities, and whatnot. With 10 different levels of rare and having to check every set to see when it want printed as what... That's not making people make budget decks. Its just making it harder for people. To effectively do it, you'd have to have knowledge of all the sets mentioned and have tabs for three different sites up, going off of memory, one tab to find the cards, a second tab to check if it was in the right packs and not in one of the excluded ones, and another to check the rarities. If you don't have extensive knowledge of those particular sets, you'd be stabbing into the dark, running around blind searching all the sets and you wouldn't even be able to have a decisive filter. You would have to go rifling through the commons, of which there are tons, most of which are pretty bad. You'd be doing a whole chunk of research for every tentative card. If you wanted to do budget, why not scrap the matter of rarity and just set a final price tag for the deck or a max price per card? Then just use the appropriate ban list.