If you don't care about most of your games not being in pristine condition then purchasing them at the end of the gen is fine, but if you're one of those that has an OCD where the game has to be perfect or near perfect condition, it's best to look into these games when there are more available. It may not be $10 or less per game, but even used you'll have an easier time finding even the most uncommon games in near perfect condition.