Hi,
I built QuoteWise on my own and I still run the support inbox myself. So if something breaks because of the plugin, or you just can't figure out a setting, I'm the person who's going to write back. Not a chatbot. Not a support rep working off a script.
You'll usually hear from me within 24 hours, with the actual code or steps you need to paste in. 14-day refund: if it does not work as described and the problem is not fixed within 48 hours of your email, you get your money back.
The honest reason I can offer this is that the team is one person right now. I read every email myself, so the bar is whatever I'd want from a plugin I'd paid for.