Those PCBs shown wont make you rich. The goldplating on the LED displays is very thin the one on the keyboard PCB may be a bit higher but still. But I CAN tell you that a company like Fujisu-Siemens did cash in 20.000.000€ in 2008 just from recycling the gold of their old Siemens-Nixdorf ATMs!
So there must be a lot of gold in those terminals, just need to look more closely...