Prices are even better when you have an active HB Choice subscription:
Mirror's Edge Catalyst: $4.78
Grim Dawn: $5.44
Door Kickers: Action Squad: $4.57
Ghost 1.0: $4.24
Grim Dawn: https://www.humblebundle.com/store/grim-dawn
Door Kickers: Action Squad: https://www.humblebundle.com/store/door-kickers-action-squad
Ghost 1.0: https://www.humblebundle.com/store/ghost-1-0
Enjoy!
Thanks for this - grabbed Door Kickers and two copies of Grim Dawn so my wife can play as well. Kept hearing good things about it.