The first 128 GB USB drives has been introduced by Kingston. It costs $546. The company also will release 32 GB and 64 GB versions. The costs of these two are $120 and $213 respectively.

A different company also made a 128 GB USB drive and it is over $100 cheaper than the Kingston brand.

The Kingston USB flash drives are Windows Vista certified and they also have Windows ReadyBoost features.

Source: Techtree