Instructions
Determine the condition of your wrestling figure. If it has been taken out of its package, there's going to be a significant decrease in value. However, if it's still in excellent condition out of its package, it may still be worth something. Even if it's in its package, the package itself can be a significant factor in determining value. For instance, if the package is bent, ripped, torn or damaged in any way, the value of the entire collectible goes down.
Get a magazine such as Lee's Toy Price Guide. This magazine is like Beckett for sports cards or the Krause price guide for coins. If you're not able to pick one up at your local hobby shop, you can order it from leestoyreview.com.
Search a website like mcfarlanes-figures.com or wrestlingfigs.com to see if there are any rare variations on the figure(s) you own. For instance, in 1984, the figure Junk Yard Dog had three different chain variations: silver being the most common, red being less common and a black chain being the rarest. If you find that your figure has a rare variation, you may have an excellent find.
Take it to a collector's shop and have them appraise it for you. In the end, what you're selling is only worth whatever someone else will pay for it. That being said, a collector's shop will try to make a profit on it, so they may undercut you a little bit. If you're up front with them and tell them that you're not interested in selling it, but that you just want to know what it's worth, they might be happy to appraise it for you anyway.