The Humble Bundle has a subscription service whereby subscribing early would give you an immediate copy of Mad Max, with further games being issued within the month.
The price for Mad Max alone is the lowest recorded from a "legitimate" source.
It is also cheaper to buy the SEGA weekly bundle;
https://www.humblebundle.com/sega-strategy-bundle
for USD$1, receive 10% off for new subscribers to the Humble monthly bundle and apply it to the Mad Max bundle.
I already bought mad max maybe ill have to sit this month out.