A very valid concern about cost. It's very expensive to print and hang a show somewhere. I too don't really have the finances to do it.
If you want to hang prints inexpensively, though, it isn't terribly difficult to cut your own print mounts and window mats. It's even relatively inexpensive to order the window mats pre-cut with a nice bevel edge, if you buy in quantity (all of them will have the same size opening). For showing locally, it's often fine to show the print in only a window mat, without a frame. Just get some clear plastic sleeves for them.