http://www.amazon.com/2GB-MMCmobile-...6467513&sr=8-1
$34+S/H
One week ago price was 29.99. They shipped card to me on saturday!
You should look for not only for MMC or RS-MMC, but for MMCmobile as well.
OS boot-up time from MMC feels twice faster then from internal flash (with Fanoush's patched kernel). Card spec - MMC 4.0.

Please, do not consider this as advertisement.