Has anyone with a very high prescription tried Zinni for glasses?

I tried looking for similar posts but they're all from people with way lower prescriptions than me like -6 or something. I need to know if Zenni works for VERY high prescriptions.

My vision is -13 in one eye and -17 in the other. My glasses get so expensive, so I'm looking for cheaper alternatives. I've heard good reviews for Zenni and for Zoolool but I can't find anyone with my prescription to see if they can truly do it well. Looking at Zennis website it seems with my prescription it'd be about 100$ a pair which is much cheaper than getting them in person.