I'm on the net alot (hence my n900) and use ebay, but would never buy a cd, DVD, or sd card from there. Newegg or amazon is usually my choice for sd cards or amazon (not sellers on amazon). I pay a little more but I pay for trust in a business. My n900 was bought off newegg. On the other hand I just bought a zeemote off ebay, but I bought my 16gb microsdhc from newegg.