It bothers me because it feels like I'm being accused of ripping off someone before any money has changed hands.

I respond by saying that I've looked at similar cars for sale and priced mine accordingly based on what work I know the car needs. If you find something that needs attention, we can talk about it.

Maybe that's why ebay's so popular.

Sixto
91 300SE
86 300SDL (due soon)
81 300SD (for sale cheap)