Shower needs replacing. Advice needed

[Rhiannon Then]

I have to replace my all tile shower in my current home that I am planning to rent out. Water is leaking through an improperly installed glass sliding door. At least this is what my husband suspects is the problem. The water is hitting and damaging the dry wall, which he says he can easily replace. Whoever did the tile did an amateur job. It's not the most ascetically pleasing set up? Was wondering what is the most cost effective way to replace this. Are fiberglass stalls reliable? Any other options? My husband would be handling the installation. Tile looks nice but don't really want to make the time. My property will probably rent out for $700 or $750 no matter what we do because of the location, so don't want to make luxurious upgrades. I want something that looks pleasing, is reliable but is not expensive. New to remodeling Thanks for any tips, Rhiannon