I was always nervous about the thought ob eBay and SD cards. Almost have bought in the pst, but didn't. I will still stay away.
I recently had my first eBay scam. I bought a 'brand new, sealed' Blu-ray of the second season of Weeds. The lady had 100% feedback (well over 100). Turned out to be homemade, labels were stickers and the menu only had the choice to play on it. Interestingly enough when I contacted her saying there was something funny about the Blu-ray she instantly refunded my money and told me to keep it since she got refunded for a bad batch she bought. Then she wanted me to give her positive feedback. I didn't and contacted eBay anyway, I hate when people try and pull that crap.