>>626616 (OP)Cheapest possible printer paper (also marketed as "drawing paper for kids") is usually very thin, and it's not that bad for origami, it's not that tough but I've folded many many complex origami out of it. Because I'm a cheapskate and I really don't want to pay the paper jews when I'm just fiddling around and not making some superduper exhibition pieces.
tldr thin cheap perinter paper works for many many many complex models (it's the size that is more limiting than the paper itself)