I don't know if it would be common with other Parkinson's patients. I guess each company benefit program is different.
I was lucky with mine. I have an unlimited amount of drug coverage, but my wife, on her plan, only has $3,000. To get the Botox formula this time around would have cost us about $700, and with what we bring in right now, with my funds that come in, I can't justify putting my family in a bit of hardship just because I need the Botox.