The mainstream euro beers (Becks, Heineken, Stella, Peroni) are my usual go to, and can often be found for 39.90 at Dan's, or just over. However today I walked in and found that aforementioned selection at 45-52 per slab, except the Becks that was hidden away in the isle.
It seems the Becks and Stella go on special periodically, I think when they obtain a grey import batch (ex employee from eons ago), and so with the (exceptionally high) price of the others, this seems like a good deal if it's what you're into.
Drink responsibly.
More likely they're matching someone's price…