This is for a European CD Key.
It doesn't say on the product page, but it includes the Minerva's Den DLC. When I activated on Steam, it said "Bioshock 2 + Minerva's Den DLC", and I can confirm that is what has appeared in my game library. Bonus!
Remaster comes for free if you have this on, I believe, 13th September.
£1.55 at current PayPal exchange rate.