Just to add to it: if you call and tell the lady you made a mistake would do no good - it will be just another lie... If you feel like doing something, well then call her and tell her you changed your mind and you will be happy with 150 bucks. No other explanation.

In my part of the world that would be a very nice surprise for her...



But then again, in my part of the world, 150 dollars is a man one month pay.