That is very strange, but for some days Super Mario Galaxy has been impossible to find in many stores. I guess Nintedo España did not bring too many units to our country.
For a very long time, Nintendo España has been bringing very small amounts of units for triple A games. When Zelda WW launched, it was almost impossible to find for more than a month since its release. I think Nintendo prefers to run out of stock in Spain rather than in France, Germany or UK, which I think are their priority markets here in Europe.







