This is important for all decks but particularly important for aggressive ones, which need to be racing and not stalling (or at least, knowing when to race and when to stall)
Liliana's Contract will need Maskwood Nexus at a minimum, for instance, while Felidar Sovereign demands lifegain, Biovisionary needs clone cards like Helm of the Host, Halo Fountain needs tokens or your opponents to never play a board wipe, and Hellkite Tyrant requires artifacts
Best for: Price comparison, graded singles, and finding specific cards Watch out for: Counterfeits from low-rated sellers
On to the actual decks
Youll be able to find some budget decks in OP16 The Time of Battle , like Yamato, but if youre looking to collect or even play a max rarity version of a deck, youll have to shell out quite a bit of money
All of the 4-color commanders seem very strong so far and since the blueless deck isnt likely to have no other value in it, its difficult to imagine a world where this hits $10 because nothing else in the deck is worth a damn