At 8000 miles my stock Dunlop (rear) was to the wear bars, but just barley. Yesterday I had a Commander II put on and only rode 10 miles. This weekend I'll get in about 600 and see how it handles.
My front Bridgestone still has some rubber left, so I'll leave that on until spring, since my riding season is closing fast.
I paid $180 for the Commander and $55 for the install, don't know if that's good or not. Oh, and no sales tax in Oregon !