How do I fix my shower inexpensively and easily?

I tried to regrout the tiles in my shower stall but they were falling off so I took them all off. The tiles were attached to standard wall board and the board was water damaged so I removed all of that. Now I'm down to studs, which at least are in good condition. I thought it would be easy to just get a surround system that attaches directly to the studs. NOPE! My shower base is 34 X 34 and in good shape. I don't have room in the alcove to make the shower bigger. I cannot find shower panels that fit the 34 X 34 inch base!! Does anyone have ideas of what I can do? I would strongly prefer surround walls versus tile. Money is a great concern as well as my "undeveloped" DIY skills. (I'm good at deconstructing though!)

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