Buy.com has the SanDisk 4GB Memory Stick PRO Duo for $20 with free shipping

List Price: $79.99
Mail in rebate /Discount: - $60.00
Sales price: $19.99 + Free shipping
Price After Rebate: $N/A

Technical Details:
Manufacturer SanDisk Corporation
Form Factor Memory Stick PRO Duo
Manufacturer Part Number SDMSPD-4096-A10
Storage Capacity 4 GB
Dimensions 0.06" Thickness x 0.79" Width x 1.22" Length
Memory Card Quantity 1 x 4GB
Application/Usage Digital Camera
Product Name 4GB Memory Stick PRO Duo
Packaged Quantity 1
Product Type Memory Stick PRO Duo

Link to the buy: Buy.com
Rebate form: N/A