I already have the full game and season pass on XB1, and love the game, (hate the skins there releasing now-a-days thou)... wanted to try it on PC, but wasn't worth another 75 bucks for everything, well now there's a starter pack, full game, all maps, but only 4 characters... So I got it, like to see how it plays on my PC... more info:
http://rainbow6.ubi.com/siege/en-US/news/detail.aspx?c=tcm:152-253088-16&ct=tcm:148-76770-32
BTW, via Steam.