WTB Shimano 10sp rear

So...as I was putting in a trainer ride a few weeks ago, my junker trainer released my bike, and I rode headfirst into our giant oak entertainment unit. After picking myself up off the floor, I saw that the spokes of my rear wheel were intertwined with the trainer when I fell, and it is now not so hot. LBS fixed it up so that it's safe for indoor riding, but I was seriously cautioned against taking it on the road.

To fix this, I'm looking for a cheap (preferably <$75) 10sp compatible Shimano rear. Not picky on make/model, etc, as I'm probably going to pick up some higher end toys later this year. Just need something to get me through a few weeks or so of outdoor riding.

Willing to pick up in NYC.