Hello. I have a friend that is selling a walk behind 33" cut mulching mower to me. It has a 8.5hp engine on it and double blades. The make is a Troy Built, but I don't know the model. It looks like a heavy duty front cut with the caster wheels. I'd like to know more about this mower and a fair asking price. It's probably 7 to 10 years old and not in production anymore. Looks brand new. Thanks for your help.