I built my own, but there are some cheap Chinese ones you can get.
Really, there's nothing to it - a UV eraser is nothing more than a UV tube in a box that can be sealed up so the UV doesn't get out. Better ones have timers, since you don't want to expose the EPROM too long.
I went overboard and built mine with a digital timer, VFD display, and a keypad. And a drawer to load EPROMs, and a long tube so I can do like 20 of 'em at once.
But a small, cheap one will do the same thing. Just do whatever you're more comfortable with, or willing to spend money on.
-Ian
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