Honestly, if I were in the market, I would offer you about 55% of what you are asking. Maxfield has a Hollywood crowd that doesn't have a care in the world about prices. Atelier offers an experience, and it's a regular retailer. You are... some random dude on the internet. I would only buy from you if I wanted to get a deal. There is no motivation to buy from you otherwise.
Plus, you advertise the item as OBO, which indicates that you are willing to haggle. In this day and age when 20% coupons are ho hum, why would you espect a best offer of only something like 5 or 10% of your asking?