Id agree $8500 seems abit high for what id consider paying for a MR2, but it really comes done to personal preference.
When I sold my Soarer I priced it towards the higher end of the market knowing id get a lot of stupid offers. But eventually one guy turned up gave it a quick 2 min look & bought it on the spot without any price negotiation.
It was exactly what he was looking for & id imagine the guy selling this MR2 is using the same logic.