Very difficult to say on price...
Very few would like to discourage you, and few here would suggest a price....
My own personal (cheapskate's guide) idea is: 1 part, full purchase price, + 1 part, tax and selling fees, + 1 part profit, and occasionally, + 1 part, I think, "sexy item will do well," so set the opening price at a level, you are happy to accept. Anything more will be a bonus, and put a bunch of flowers in someone's hands, a meal with friends on the table, a ring on a partner's hands.....
But hey, life means so much more than money...
Regards,
Marcus