The FIFA Soccer 2012 Euro DLC is 25% off for anyone interested. Saw it on the dashboard as well as Spylon's site.
If you (anyone reading this) haven't already bought it by now I would suggest passing on it.
It was overpriced and buggy, and there are still real issues with the online tournament mode (disappearing substitute players, etc).
The expedition mode was a decent idea but quickly becomes an insanely tedious grind.
It just doesn't offer that much value for money in terms of what it adds to FIFA 12 overall.
We're 3 months from a new FIFA game. You'd be better off sticking with what you have, selling your game sometime in august, and getting the next version.
The Euro mode will likely be a ghost-town after the new FIFA is released. Buyer beware.