First, that's way too expensive for that Yanmar. I have a Yanmar RS-1200 tiller (48" wide) that I bought 3 years ago for $300. I used it with my Kubota B7510HST to landscape my new house.
As for performance, it's a fairly lightweight tiller, not much good for primary tillage (i.e. tilling virgin, undisturbed soil) at least in my neck of the woods where rainfall averages about 19 inches per year. I had to plow the ground with a middle buster ($140 from Tractor Supply) before rototilling. Then the tiller worked fine as a secondary tillage implement.
Be sure that it's set up for your 3pt (some of these Yanmars are 2pt setups). Also, you probably will need a slip clutch (~$100) since your tiller may not have one and, like mine, may not have shear bolts either. I had to use the 35" long 3pt lift arms from my MF-135 diesel since the 26" arms on my B7510HST were too short to accommodate the slip clutch and the shortest pto shaft I was able to find at TSC.