If you got them for $0.50 and then do cap out at $5, and you bought 50 ($25 investment) you now just gained $225 in value
ebay/Paypal/shipping fees won't let you get away with it just saying. The card has a virtually unlimited supply being a crap rare (compared to Splinter Twin). Unless half the Legacy meta plays it (Hive Mind), only then it may cap out at $5. I don't see it happening anytime soon. If it does, Show and Tell will be banned.

(I got my foil set for $3.25 shipping included btw)

In other news:
Near Mint English The Abyss has been selling at 95+ previously 75+. Played ones still at 65+. It's reserved, definitely playable and splashable 3. 4 Jace + 2 The Abyss = total domination.

edit: It will only take one deck to top 8 in SCG for it to increase another $25. It may settle at $150 (Mint Condition).