Watch out, I think this is an OEM mouse. Means, no box, no UPC to get the rebate, and no warranty. Although it is a great price if you don't mind the OEM version. I have this same mouse, best you can get, because the Explorer is a little bulky in my opinion. This one is also better for lefties than MS explorer. I personally got mine for regualar price at buy.com (I think)...it was like $38-$10 rebate...plus shipping, so somewhat over $30. You'll LOVE this mouse. I had one of those Logitech feedback mice before, it SUCKS because it's too small and seems to be made for a 5-year old.