All you have to do to save $49,500, is stay strong and durable on Christmas morning while explaining why you didn't buy a present. Alright, she is definitely going to be pissed. But how bad could it be? Maybe it will last a week. It is still worth $49,500.
Don't buy any fucking christmas presents!!!
Your lousy wife was probably going to leave you anyway. Might as well just speed things up while making a fortune. Then, get a new wife. A better one.