Maybe I should go back for it, then. He said his neighbor repaired lawn mowers, and he'd just done a full tune-up on it.
It was under fifty bucks.
If he'll start it and it starts easy, get it. Under fifty bucks is a good deal. Those simple mowers without a lot of self-propelled gadgetry on them also have pretty simple engines and less things to fail. A tune up is basically a new spark plug and a bit of oil.
Was it van-able or do you want me to take you in the truck?