I am sure everyone knows what this cartridge can do, but for those that don't know, here's a brief synopsis.
This is a cartridge that fits into the Nintendo DS and DS Lite like a normal game cartridge.
It contains a space for a Micro SD card to be inserted into it.
You have to put Micro firmware onto the Micro SD card and then put your "Homebrew" games, onto it and play them onto the DS.
There is a rumour that you can get illegally downloaded games free from the internet, but this is something that I wouldn't do as it is not big, and certainly not clever.
It is compatible with SDHC Micro SD cards, so you can easily have 80+ games on a single 4gb micro SD card.
You can also listen to MP3 songs, View Jpegs, and watch films on your DS.
If buying 3 or more,make sure you get the discount available.
Dealextreme are based in China.
Dealextreme can range from being extremely quick for orders, to extremely slow.
Lately, I have ordered things, and received them less than a week later.
Dealextreme accept payment by Paypal.