That's your opinion. I disagree that there is any rip-off since the potential customer was not mislead/scammed.
I think you are in a minority of one here. Just because the potential customer was not mislead/scammed does not means that the hotel didn't try and rip him off.
It's not just my opinion either. Everyone else who has commented on the charge quoted seemed to think that the hotel was attempting to rip potential customers off by looking to charge an outrageously high price (which is what the dictionary defines as a rip off).
You, on the other hand, seem to be the only one of the opinion that the hotel was not attempting to rip him off
Murt