It honestly bothers me more that they're consistently ignoring that prime is supposed to be 2 day shipping, so I either get a pre order the day of or a week late no 2 day shipping to be found on any preorder.
When trying to sell, I like to look up the prices of the sold listings on Ebay. Here's Kirby's Dream Collection. Compare the condition of your copy to the ones that have sold and try to find a median. Subtract $5-$10 for Ebay/Paypal fees and having the buyer come to you.
If your copy is complete with everything in mint condition, $60 seems like a good asking price.