Suggest An Alternative Medication For Lyrica

My Rx for Lyrica is so expensive I can no longer afford it. My neurologist has prescribed gabapentin as a substitute for the Lyrica, but pessimist that I am, I am not expecting it to help my diabetic neuropathy as the Lyrica did. Even with the so-called discount card, my Rx for Lyrica would cost hundreds of dollars/month. The pharmaceutical company that makes Lyrica would give it to me free of cost if I were destitute, but no, I am merely one of the already-strapped middle class people. Any other substitutes come to mind? Thank you!