By opting to end their turn, a player signals that they are ready to transition from one phase to another, and from one player's influence to another's
Many decks lean heavily on non-creature permanents that enable their strategy, and losing those can be just as devastating
On average, older cards from the late 1990s and early 2000s are worth more as well, though some new cards can be expensive
It plays so well with blink and ReanimateReanimate effects, and you always feel like you got away with something when you get to rebuy a card you evoked
This is the single most powerful mechanic for gaining tempo and is the cornerstone of almost every top-tier competitive deck
Unless the pawn shop is known to specialize in trading card games, chances are high the clerk wont know the ins and outs of Pokemon card trading