Best way to get your values worth? Ebay. Easily. As long as they're mint/near mint, otherwise they're somewhat useless.
There aren't any good card trading sites/forums that I know of, just sites that sell cards and rip you off if you wanna sell to 'em.
Make a YouTube video where you show off the cards, individually, that you intend to sell. These videos are becoming more and more popular and I like that because you can see the items from multiple angles and hear if the seller is sincere, or not. Good luck!