They've been taking up space in my mom's attic forever, because they would be worth a fortune one day. Randomly looked up the value of a few of the cards. lol.
the real problem is that no kid kept his cards "10 gem mint" even if they took good care of them. i see cards that i remember having going for a few hundred bucks as a 10 but $20-30 at most in average condition. i'm sure >99% of my cards aren't worth a penny.