1/6 scale action figures can be an extremely expensive hobby. Alternatively, think about cheap 1/6 vinyl kits! These go on average for only 15$
CHeck this site out for some kits http://modelsmountain.com/index.php?route=product/category&path=20_38
yes, they are very unarticulated compared to a power team elite figure with 30 points of articulation. And are not prepainted.
Here is just a sampling of some kits out there on the market