I'm not sure how many people reading this still haven't bought it, but just in case I thought I'd share this great deal I was just emailed about.
I've bought from them before, perfectly easy and their bundles work similarly to humblebundle and others. I'm a bit shocked because usually their bundles are a mixture of games with 90% crap and one or two good but this is an amazing deal! I've already spammed the link to all my mates to try to get them into the series.
Anyway, take a look. I believe it's the entire GTOS series, and for under £5!
https://www.bundlestars.com/en/bundle/graviteam-tactics-bundleMods - Sorry if this doesn't belong, and if so please delete.