Hello
On ebay there is a seller named tech_google offering Panasonic SD 256MB cards at 24.99$ plus 19.99$ shipping (worldwide). It seems to me like a good price (especially since it is a Panasonic card).
I just bought one, I 'll have more info when I receive it.
They were just going for something like $25 (shipped) after rebate at some store (the deal is over).
Personally I would skip that deal (becuase shipping is insane at $20 when it will cost no more than $1 in USA and $5 worldwide) and buy the KINGMAX 1GB for $110 shipped from newegg.com (see my other post).
But on the flip side, since you alreaqdy bought it, Panansonic makes what is widely considered the fastest and best quality cards, so although you overpaid a bit, you are getting a very nice (and fast) card.