Hello, I'm new to this so forgive any mistakes please. I have a '79 AC 917H and am looking for something different. What would be a good starting selling price of my current mower? Overall good running condition, mostly original. Replaced fuel pump last year and replaced internal governor linkage last month. It has been maintained regularly since new. It is a good mower but just looking for something new to me. Thank you in advance for any answers!