The Kiss 2 bundle is on and none had Steam keys, but Train Simulator 2013 was just added and comes with a Steam key. You can buy it for $1.50 if you choose Train Simulator 2013 and one other game from the list.
Retails for £34.99 on Steam so a bargain at 94p.
Contains £104.95 of DLC too:
Northeast Corridor (£24.99 on Steam)
Legacy Assets US (£9.99 on Steam with Foliage and Asset Pack)
Legacy Assets Foliage
Railworks Asset Pack 1
Isle Of Wight (£19.99 on Steam)
London to Brighton (£24.99 on Steam)
Sherman Hill (£24.99 on Steam)
Thanks to Arcturas for mentioning the free upgrade to 2014 version on 26th September too.
Want more content ? Try Steam Workshop
1st Bonus - Night Of The Living Dead Defense (DRM Free)
2nd Bonus - Hypersonic 4 Soundtrack
3rd Bonus - Super Killer Hornet (DRM Free)