Well, I bought it not too long ago and I used it on some Valentine cards to have a red layer behind the heart on my card. I like it, but haven't used it since then, I am just glad I have it in case I want to use it again. I think it makes it a little easier then trying to cut it out by hand and be proportioned. Here is the card I used with it.
Gallery at Splitcoaststampers
I say it is worth it, course I love having all the extra tool stuff just in case.