you should take the set to a card shop. if your collection is extensive, you should be able to easily get your asking price.

i finally broke down and sold one of my OLD magic: the gathering sets. i still have a complete alpha and beta set, but i sold my mint unlimited set for about 6 grand not too long ago. i coulda gotten more, but i figured, the set cost me about 200$ to complete (i was a hardcore mtg player in my HS days) and i still had my alpha/beta sets are worth about 3 x what the unlimited set is worth.