It just isn't worth it. I was a customer of theirs since 2009. The prices have skyrocketed, and it just ain't worth it anymore. They're charging over $600/mo for the service if you get big. I switched over to Judge.me a few weeks ago and for $15/mo I get the more features and a better looking review system. Took me about 6 hours to fully integrate to my site.
Run away now before they realize that exporting your reviews is a feature Yotpo should probably remove.