Don't overlook selling on Craigslist too.. My boxster was sold on cl.. to local buyers who were basically, on a whim, to have a "convertible" for the fall. They stopped by, like it, took a quick test drive, went to thier bank and the deal was done.
Cabs are a harder sell to the enthusiast/track crowd, but even these guys are known for having more than one Porsche. Also, the enthusiast will nickle and dime you on every little nit, demand a PPI etc. Sometimes selling to someone "in the paper" makes for a lot less hassle for you and shouldn't be overlooked.
x2 on price being upper range imho, despite what you may have paid for it in '09. I personally prefer lots of really nice pics to a video walkaround.
imho, $4k in receipts is just info.. but not necessarily a helping point when it comes to selling, or something one should hope to "recover" upon selling either. Heck, if shop maintained, then I would gues 1/2 of that was some form of shop labor
