Though the game's been in a couple of bundles, this appears to be a historic low price. While the game itself is quite good, it also drops 3 of 6 Steam Trading cards.
There's also a 4-Pack available for US$2.99, it gives 3 spare copies to share with friends.
Edit: A link to the game on the Steam Store.
Etherlords Pack is only US$1.00
Normally Etherlords and Etherlords II are US$4.99 each or US$6.99 for the pair. The lowest I've ever seen them was over Xmas14 sale when they got down to about US$2, so if I'm not mistaken then this deal is a new historical low.
i want to get orbital gear, but knowing how poor the overseas latency, and lack of australian player base in multiplayer games im not sure