Finally got one tonight at M's (not the one near me of course, one half an hour away). They also had the gemstones. I was able to use three coupons at once to get the tool, a spinner pack of gemstones, and the "hot rocks" with the applicator!
Archiver's carries the gemstones also, but they're out of the tool itself. They only had one template (the one that comes with the flowers and some extra gemstones.)
I also bought some Darice brand hot fix gemstones for 25 and 50 cents each just to test them with the I-rock. They work perfectly too!
I have to say so far I love the I-rock! I haven't used it on any actual projects, just played with it one some extra die cuts I had laying around. I can't wait to find time to play more!