I won an RCBS 4x4 in an auction, but it came with some parts I don't need. I don't shoot a lot of calibers, so I'm getting rid of the extra shell plates via gunbroker. The problem is, they aren't selling. Am I asking too much for them? They're like new and they go for about $40 when you throw in shipping from online stores, so I figured $20-30 seems fair. Am I wrong?