When it comes to selling Yu-Gi-Oh! online, selling decks is more complicated than selling singles and playsets. This is because an eBay listing for a deck can mean at least three different things:
1) A high-end competitive deck for tournament play. These decks will have every card needed for advanced combos and strategies used in the archetype and may include “tournament-staple” expensive cards such as Pot of Desires (currently $60 for one). Many are advertised as OTK- (one-turn-kill) decks.
2) A low-end beginner deck for those just starting the game. These range in quality and utility- some may be made solely from cards in the archetype, regardless of how useful those cards are or what other cards could improve it. Some may contain only the archetype’s most common monsters, alongside other generic monsters and spells/traps. As a result, a poor beginner’s deck can lack playability because it may not have the cards necessary to understand the archetype’s key mechanic or it may have only parts of important combos.
3) An awkward middle ground which may sometimes be called “budget competitive”. Decks here can occupy any potential point between 1 and 2. Lower-end ones will be playable, just nowhere near competitive standard. Higher-end ones may have all the commonly-used monsters of an archetype, and one or two copies of higher-priced monsters, without having the Pot of Desires-style overkill cards. They should contain the key mechanic and combo of the deck, but they will probably lack advanced-level setups.