I only have a few parts I'm trying to sell but I don't know how much I should ask for them. Any input on what prices are appropriate?

I have a 2g wing, 2g sail panels and a set of stock engine mounts. Pics below from today!

There is a scuff mark on the top.

These mounts were new when I bought the car and I've put about 10k miles on it in 4 years.