It couldn't last forever. Now those free, laser-etched designs of the Zune Originals series will cost ya. Microsoft quietly made the switch sometime over the last few weeks (if not the weekend) according to forum jockeys riding the Zuneboards.
 
The Tattoo Series is now $10 or $15 for the Artist Series. Custom engravings are still free. Of course, there's no better way to keep those Zunes original than to charge cold, cash money for off-the-shelf designs.

Microsoft, Zune, Zune Originals