Generic glue-up shower wall panels?
After having a number of shower walls deteriorate in just a few years, I paneled a stall shower with an underlayment of cement board and covered it with fiberglass reinforced plastic (FRP) wall board and corner molding (links are for reference purpose only).

The project cost less than US$100 and has held up for ~15 years. In fact, the shower base needs cosmetic touch-up, but the walls are fine, and water infiltration has been eliminated.