The PC version of Tomb Raider is on sale on Green Man Gaming. For the next 22 hours, you can buy a Steam key for the game for 66% off—that was about $17 for me, although prices vary by region.
Additionally, you can use the following code to bring the price down even further: GMG20-LLASD-D8WBQ. After applying the code, I managed to pick the game up for $13.60.
There’s no telling when the code will expire, so you probably want to act quickly.
A high-five to Siliconera reader malek86 for the find!