I'm considering buying a Craftsman EZ Walk Model 917.374362. Best I can tell it's a 2008 or 2009 model. It's in decent shape other than that it's been sitting for a couple of years and the battery hasn't been charged for at least that long. I think the carb is clogged with gelled fuel because it will run for a couple of seconds if I pour fuel into the carb and pull start it. I think the starter motor is still good, but it for sure needs a new battery. So, what should I offer? It belongs to the widow next door, so I want to be fair. I was thinking maybe offering $50.00 since I'll have another $35.00 to $40.00 in it if I replace the carb and battery. Thanks!