Hello, and welcome to ck!
For something like a quote, I'd try PM'ing out to trusted sellers on ck's trading forum for their opinion on a potential pricing. Prices for items being sold here are determined by the seller, so you'll probably get a variety of answers. If nothing else, I'd try looking at boards on the trading forum that have similar account stats like yours and try setting your price based on that.
Also, anonymity is key. You never want to give out too much info about what you're selling that can help lurkers narrow down your account. So, I recommend editing out some of the information you stated her. @(you need an account to see links)