i can also recommend www.PSXBOX.net.
i ordered an ezflash iv mini sd there two weeks ago, and received it after 10 days (china to germany)
they have very good prices and the postage is cheap, too.
they answer all emails quickly and they accept paypal.
so also worth to be checked out... :-)
although i ended up accidentally changing my nand with no way of going back bc i didn't know you needed a gamecube controller to restore it (i have a wii minus/1.1, which doesn't have gamecube controller support)
and if i find the sd card i have my NAND backed up on, i can not only restore the NAND if i solder the right part in, but i can also put my NAND on dolphin, then i can play dolphin online, like PMEX Remix or MKWii Riibalanced