Many places online offer aggressive pricing so I cant tell you where to buy...However, I can tell you where not to buy which is any walk in retail store...ie, Bestbuy, compusa, officedepot..etc...as they will price gouge you like a mofo.
Here is what I got.
http://www.newegg.com/Product/Product.asp?Item=N82E16820233033
There are certain things I'd never get from Ebay due to counterfeiting issues (memory is the one of them). The benefit of the cheaper price is not good enough to justify the risk of being screwed.
You may get unlucky and get one that is fake or does not work. It's best to avoid getting it from Ebay. There's been lots of discussion about it in this forum and other forums. In fact, Ebay also says it too.
hey OP, you are in israel right?
if so, check zap.co.il
i just checked and they have a 2GB minisd for just 209ns (49 bucks).
this way you dont have to deal with any shipping costs!