[gordner]

I used them in my various Grand Cherokees and they are excellent floor mats. However, the custom fitted floor mat market has exploded with the success of weathertec, i bet you can get equivalent or better off other brands for considerably less.
If you are going to sell it, I would suggest car forums and the like. Selling GC is a pretty tired old scam at this point, pretty hard to get it done outside of a community that knows you.