New trend asking sitters to pay for utilities

I had similar experience, except learned about the potential need to contribute to paying for AC/Heater bill if it exceed their “typical (monthly) rate”, however, this was disclosed after I’d agreed and I was not aware of their typical monthly rate. Therefore, I was worried about using heater, despite cold weather. That being said, was concerned about whether or not this is something I should mention in my review. Would appreciate thoughts/recommndations, as I’m still fairly new to TH. Thank you!