Check out
www.tigerdirect.com. A friend of ours was here using our computers and advice and bought a Hewlett Packard 6.0 megapixel with 1 GB SD memory card for just under $400. I know because he gave us the cash and we used our charge card because he doesn't have one.
They had cameras and memory for less. But we have ALWAYS had good luck with anything we have bought from there.
Tawnya