I have been plowing snow since the early 80's. In my opinion this AGRI plow is an overpriced toy.
You would be much better off watching the classified adds or putting out a wanted to buy note at your locals store bulletin boards. I have bought used 7.5' and 8' blades to modify for skidsteer plows, for around $300 to $500.
Since you will need the pump, controls and mount...the price would be in the $500 to $1000 range. This way you could resell the plow when you are sick of it, for close to what you bought it for.