You will rarely pull cards worth more than you paid. Stores typically buy these for and sell them for $15–$25 . Card Quality
Some players buy bulk to create their own "Cube" (a custom drafting set) for friends.
Some people genuinely enjoy the "treasure hunt" of organizing a massive collection, even if they don't find high-value cards. Major Red Flags & Scams Reviewers warn against certain wholesale-style listings:
Expect high duplication (20+ of the same card) and mostly "draft chaff"—cards that are weak in gameplay.