Tournament Decks are roughly the equivalent of 3 booster packs, except that you get a good deal of land cards for sealed games.
This is really worth buying if you want some tournament action with your friends, but can't find a local event straight away. Another reason to buy this is because the Champions of Kamigawa set features a big load of awesome creatures. Not all of them are usable, but you can usually make fine sealed decks out of this box and a couple of boosters.
Refer to Magic's homepage if you want to know how to play sealed games - they're a lot of fun :D
-- By Jens N from Denmark on April 12, 2010
Unfortunately, I'm curious as to how many rares, uncommons and commons there and can't find them, but the reason why this is so good is I got like 3 legendary creatures. My card shop sells them for about 5 more dollars than trollandtoad.com. You get at least one foil so that's really good. I think it's better than a booster pack because you get more rares for your money, plus, I know I run out of a lot of lands quite often so they pack 6 of each. That's all the free advertising.
-- By Dude NW of Chicago from Chicago USA on November 25, 2004
the 75 assortment deck isn't bad because you don't know what your going to get its exciting when you find out what you or how many good cards you get
-- By Chris from Pylesville,MD USA on November 16, 2004