overstock.com has a 4 gig SD card for $100 that they claim is a savings of $50. the brand name is Kingmax, which i guess is off brand, but the price beats the crap out of wal-marts 2 gig scandisc brand which comes out to be about $85. what do you think? think this is a good deal? im looking for a high capacity card for my digital camera. i know 2 gig is great, but a 4 gig would be awesome. especially at that price? whats your opinion on this card?