I'm buying a 1999 Jeep Cherokee sport and one of the corners of the rear plastic bumper is dented in. Can someone tell me how much it would cost to replace one of these? I don't see how they can be too expensive...it's the black gritty kind of covering that you see come with all stock Jeep Cherokee's. Not grand cherokee's, just cherokee classics or sports. I've also heard that they are very easy to pop back in to place, but I'm not sure how that would work in my case. Any tips/suggestions on how much these cost and where I can buy one? Please & thank you.