It would really have to be a big difference in cost to make it worthwhile, once you add on luggage/carry on fees, meals and possibly hotel (depending on departure time). We added it up and didn’t seem worth it.

I have never heard of this airline, but I agree with @Marktweed … it hardly seems worth the trouble!

Based on this (https://www.zipair.net/en/boarding/support), it looks like you have to call them to get the disability assistance you’ll need.

I don’t see why all airlines just make that part of the online reservation process.