I still don't believe they only gave her ~$2,500 for all the lives she saved. Their prince is a cheapskate.
On the other hand, she's staying at a good hotel for only thirty bucks per night, with meals included. If we compare how much that would cost nowadays, two and a half month's stay, plus food, is pretty decent wages. While I am quite aware that a medieval economy is considerably flatter than a contemporary one, equating one bronze coin to a hundred yen isn't really a fair comparison for prices and wages. I'm now wondering if the author is deliberately using this economic flattening, or if this is more of the usual, "Screw the maths, let's get to killing some monsters," that is typical of economics in an isekai manga. My guess is that we've collectively put way, way,
way more thought into this than the author ever did.