GameStop offers Bioshock: The Collection for PlayStation 4 or Xbox One for $29.99. (Amazon has both for the same price.) Apply coupon code "SAVER" to receive free shipping. That's tied with last month's mention (of a downloadable PS4 version) and the lowest total price we've seen. (It's a current low by $8.) It includes remastered HD versions of BioShock, BioShock 2, and BioShock: Infinite, each with all single player DLC.
Update: Best Buy via eBay now has it for the same price also.