Being the cheap guy that I am, I always look at used first.
With that said, many/most gray market yanmars come with tillers. One in nice condition can be had for $100-$125 ft of width.
The tines on mine were still in very good condition, lot of paint still on them, and the gear train is so quiet I have to turn around some times to see if it's running. These tiller don't have std cat1 hitch measurements but I was able to connect directly to the tractor. After getting a quick mount hitch I did the mods on the tiller to meet cat1 specs. A 1400 model is what you'd be looking at. 1400mm = 55", just short of 5'.
Have not had any problems and just finshed last month using the tiller to work up old pasture, abt 3A. Not a peep from the tiller.
Something to think about if $$$ is an issue and there is a dealer within reasonable distance.