The price sounds ok, but you need to ask what type of heating is being used, ie.. lamps or UTH, and if a thermostat is included. If not, be prepared to get one, especially if a UTH is being used. Depending on the size of mice she has been feeding it for the last 3 years, it may or may not be on the smallish side. But that is not too important. What is important is for you to look the snake over and check it for any obvious health issues and it's temperament. And if you do decide to get it, we must see pics...