Coachy, actually...they do last a long time. I've lost or broken arrows stumping, but never worn one out on my pile. Not sure about where you're at, but a pile of dirt works well here.
I've spent quite a bit of money on targets before (I've used every "block" type target that can be had) and when I was shooting 100 or so arrows a day especially broadheads, they didn't last long at all. I've got a few 3D's that I shoot at some but my pile of dirt works better than anything else I've used. If I was real picky I'd get a pile of sand, but I won't spend money on a commercial block target again, that's for sure.