It would help if you post more detail: price you are looking for, service history/records, fluids changed, intervals, mods, accessories, options, etc.
Time frame? 2 weeks, 2 months?
To be honest, I'm not really sure what price to ask. Kelley Blue Book says private party value is $16,015, so I guess $15k would be a reasonable price. Of course, I'd be willing to consider other offers.
As for service history, I had an oil change at 5k miles, used Amsoil fully synthetic and OEM filter. At 8k miles, I replaced one of the tires because it had a slight bulge in it. At 12.5k miles, I replaced the oil again, using Amsoil fully synthetic and a Wix oil filter. I actually have the oil and filter for the next oil change as well, I'd be willing to throw that in with the deal since I obviously won't have a need for it (next oil change due at 20k miles).
I've done no major modifications to the car. The tires have nitrogen in them (which has the green tire valve covers that match the car, a simple but cool effect), there are guards on the edge of the doors, and there is a small black stripe along the sides of the car, all installed by the dealer. Besides that, the only things I've done to it is add an arm rest to the window sill (makes it comfortable for other long-distance drivers like me that like to rest their arm on the window sill), and I have a small magnet just above the radio that can be used to hold your cell phone (I have extra magnets that you can stick to the back of your phone, navigation device, etc). I also have all-weather floor mats.
Hopefully that provides a little more information about the car. I'll post some pictures soon as well.