Good point, Canon lists a 512Meg card for $35, but I bought a premium Lexar card for about $20 at StuffMart. You can get a no-name brand for probably $10.

One thing I noticed was that there seems to be no consistency when it comes to speed. Canon recommends their "high speed" card for taking full 30fps video, but they don't say what that speed is. The various brands ranged from no spec whatsoever, to "60x" to "speed optimized" to "really really fast". No way to compare them between brands and no absolute spec...