Earlier, I did a post about how you can mod your PS2 using the game swap trick. Some people (like myself) dont want to go to all of that trouble (like I dont have a dvd burner).
Here at a cool site called The ISO Zone, they have lots of cool tricks, things like netflix and emulators, for you to download for your XBox, PS2, whatever. Here at their marketplace, a seller called VGA is selling pre-modded official PS2 memory card with a cool guide and software for only $15! It ships to your house in 2-3 days (besides me, because I ordered on a Saturday, and Lucky Me, the USPS doesnt work on Sunday.) It truly is a good value.
You can purchase this from The ISO Zone here.
NOTE: As someone commented below, there is another site that sells these for £12.95. You can find this here.
UPDATE: Version 2 kits are now shipping. These new kits include: More Tutorials, More Tools on the Apps CD, and a Free PS2 Game!