I think the best way to sell these would be to list the players, brand of card, and year. All that info can be found on the cards. I don't think you will get all that much interest at all by saying you have a bunch of cards in a box that I want to sell.
Call me old fashioned, but I like to know what I'm buying, before I buy it!
If you have too many to list, pick out the star players like Gretzky etc. Those will be worth the most usually. If you need a hand figuring out what you have give me a shout on the weekend, and I'll see if i can figure out what you have. Maybe you have a few gems sitting there.