Lexar’s Professional 133x SDXC cards are now shipping in the jumbo sizes of 64GB and 128GB.  These new SDXC cards carry retail prices of $199 and $329, respectively. (Although, the street prices are substantially less.  See below.)

Find them at the following links:

Lexar 64GB SDXC Card: B&H Photo | Adorama

Lexar 128GB SDXC Card: Adorama