Personally, I'd be a bit skeptical. Kokam 3s 3200mah 20C packs are going for about $120, which are quality packs. It isn't too likely that the same can be said about that pack.
SH Z-Car, Custom Crawler, 8s Savage, 12s XTM XLB 1/7 buggy, 4wd 4-link rear/IFS Pro4 truck, Custom Hyper 10 Short Course, Belt-Drive Mammoth ST 1/8 truggy, 4s 17.5 MM Pro HPI Blitz
What I do when there's a price on something that looks too good to be true, is check out the prices on some other products that I do know the price of. If those prices are about the same as everywhere else, then you can suspect the really low priced item as being inferior. If all prices are comparatively low, then maybe the low priced item may be OK. On the other hand, prices aren't everything; customer service, warranty/return policy are important too.