how much does it cost to paint my 2001 jeep wrangler

For a decent paint job? $3K to 5K. for a basic paint color change. It depends on type of paint, you will need prier and prep, supplies and labor all added in. Get a few different quotes from reputable shops. Of course you can go to a place that will just overspray a color on yours that won't last long for less. Depends on what your looking for.

This really depends on the quality you want. Dolby is right assuming there is little body work to be done but you could pay a lot more for a show quality job. To do this right all the trim needs to be removed and paint things like the underside of the hood, door jambs etc.