That one for $1250 in Ohio has been listed for about 8 months now.
There is one for sale in Canada that is fully restored for $2500 that has been on the market for over 3-years.
If it was a 47 or early 48, it would be worth that but it is 52 and is worth about $1000 to $1200 restored.
Most of these sell in the range of $200 to $800 in running but unrestored condition.
Naturally, the more implements - the higher the value.
If it has the 18 inch front wheels than it is going to be a 1947 or early 1948 and would have a Wisconsin AKS engine.
The information that I have shows that the factory switched to the 16 inch wheels per engineering change dated 6/23/48.
The 1948 Ridemasters with the 18 inch front wheels are harder to find and the 1947 Ridemasters are very hard to find.
In the last three years I have bought two 48 and one 47 Ridemasters with the 18 inch wheels and these have cost me $400 to $575 in unrestored and not running condition.
The 55 thru 58 Ridemasters came with a Briggs & Stratton engine and you could get them with a 2-speed transmission.
These are also harder to find and are worth more.
The late 48 thru 54 Ridemasters with the 16 inch wheels are not that hard to find and there are generally half a dozen or so on ebay every summer.
They are more common around Michigan, Ohio, Indiana, Illinois and Wisconsin.
They are very hard to find west of the Mississippi.
The photo that was posted be Steevo is a 1946 FMC Bean Cutler.
These were only built one year and is the predecessor to the Ridemaster.
They are easy to find out on the west coast but almost imposable to find east of the Mississippi.
Hank Watkins ( the Ridemaster expert ) has compiled a list of Ridemasters and he currently has over 300 serial numbers on it.