Looks good! Nice that it started on first try. Dents and scratches do not appear to be more than surface stuff from what I can see from the photos.
When I purchased my HRM215masters from my neighbor it also started on the first try. But they left old gas that dried up in it and it surged, so I ended up having to clean the carb. Then it ran perfectly.
I also replaced the air filter, changed the oil, replaced the spark plug, lubricated cables and wheels, cleaned the underside, and sharpened the blades. None of what I did cost very much, and mainly took a little time on my part.
Afterwards it ran wonderfully, and I saw no need to take it to a dealer. Although I plan on checking the RPMs this spring to make sure they are in spec. It sounds great, but I want to double check before running it for another full season.
I would suggest you drain that old gas. Then I would take off the carburetor bowl and take a look at how it looks. If there appears to be a lot of crud in it, then a cleaning might be warranted.
Not sure about the cables. IMO, if they work, then I would leave them alone.