This is probably one of the best deals we've seen on a SanDisk-branded 4GB Memory Stick Pro Duo in a long time, if not ever.
Complete with free shipping, online retailer Buy.com (linked above) is currently offering the stick at a very attractive price of $30 dollars, $50 off the standard list price.
There are no strings attached, aside from the fact that this offer is not an International one, as Buy.com only ships to addresses located within the continental United States.
We have seen Lexar branded cards for cheaper, but those often have issues with loading plug-ins with PSP Custom Firmware. That being said, those interested may want to grab one while they're still available!
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