1000000's of buyers have paid $340 for it and been completely satisfied, but for you Oly, if you promise to tell all your friends about it, only $9.99.
If I could have my choice I'd probably get a WT IceSac. Then again, my deuter guide 35+ and Arcteryx Nozone seem to offer a size range to fit most needs as well as most of the good features except tool tubes.