Whats a rusty 89 jeep wrangler worth?

its black windsheild is rusted but that seems to be the bulk of it aprox 150-200k miles i havent had to do anything other then change the oil in 2 years its mechnicly perfect soft top with several broken zippers no back seat or spare tire mount brand new tires stock 5 lug 5 speed 4 cylinder i belive im about to put it on craigslist or try to trade it for a converted buss motor home i wanna know aproximate value and ill answer any other questions just wanan know what shes worth