Just a heads up for those sitting on the fence with money to spend. Today is the last day of the Steam Summer Sale and D:OS is available again for the encore listing at the prices listed in the original post.
Note: how often a game is put on sale during these events is determined by Valve, not the developer, so leave the "I bought at full price, why did you screw me, Larian??" complaints elsewhere. The developers are as surprised as everyone else.