"I do think that the takeaway from your comment is that we could build out a part of our page that allows a customer to dig deeper to validate this themselves."

Or you could remove or change this statement, if it is indeed misleading. (But I have not checked this personally).

"We always convert your money at the live rate: the rate on Google."

Trust is important and the right wording does matter a lot.

So if people read this on your website and then check for themself on google and see it is wrong - well sure, expect people to not trust your service.

My first question (with only reading your text here) would be: why and how are you cheaper than the competition?

Right now my takeaway would be: because there are possible dark patterns and hidden fees like suboptimal conversion rates included.