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It is always tough to find that person that thinks your car is as good as you think it is. But it does happen.
I sold a 30K car on this site a couple of years ago.
This winter I sold a 20K car on this site. Over 3000 views in about a month.
Right now I have a 15K car for sale on this site. Over 1200 views in about a week. No buyers yet.
I use as many pics as needed to tell the story about the car. You can put 25 pics on 1 ad. I take about 100 pics and then pick out what highlights the components. I change the ad every week. I change the wording from time to time.
It is important to keep it out there for as long as it takes.
See my ads 2462372 and 2469143 if you want.
Good luck.