Earning money from eBay

I've earned some money on eBay by selling iTunes gift cards that were left over from my last job. It sure is hard though to make money and avoid all those scams promising large sums of money. I was a victim of these quick rich schemes and avoid them since then. There is no way you can make money that fast unless you have a successful business venture. Selling my stuff seems to bring in some income, but not much. With the way the economy is running, many of us sell off our stuff just to pay for the bills. I need to replace my old router since I'm getting interference from 3 other networks around my house. Too bad I'm out of work for the time being.

Just bought myself a PSP

I just bought myself a PSP Slim with custom firmware on eBay, but the auction site removed most of the listings due to a strange reason. Luckily I bought it and it shipped out before the listing was closed. UPS will probably arrived at my doorstep Monday or Tuesday. The problem is that it does come with a memory stick, so I'll either have to buy it online or buy it at a brick & mortar store. I need suggestions on what kind of memory stick should I be buying and at what place.