Just to be clear - The boxed Premium edition (which, as CD Projeckt says, is the base edition of physical copy) is $45 at amazon with a $10 promotional credit, and has a lot of nice old-school freebies in the box. Net: $35, one day after release. And Amazon's free shipping.
The download edition is $40.
Thanks to both of you for the tips.
Honestly, I expect the price of this game will plummet fast, because of GOG's "DRM-free" download edition. Very quickly, anyone who wants a free copy is going to be able to get one with a minimum of hassle, from a friend or through nefarious sources. The price will move down quickly to capture people who are on the fence about pirating software. Capture them with a very attractive price.