There are many, many options for building your own snow plow equivalent. All will require some fabrication. I am in the process of building my own as I write this, and I think my total cost will be in the $600 range for a manual angle change plow with hydraulic lift. To add hydraulic angle change should take some minor fabrication and ~$150-200 in parts.
It may not be common knowledge, but the Kubota, New Holland and Case products are nearly identical. I am in the process of building my own snow plow, a 2335 equivalent. To date I have acquired the Kubota tractor quick attach mount $300, ordered the Kubota female quick attach female mount for the snow blower $133, and a used 54" plow $100. A little cutting and welding to put the female mount on the plow push tubes and ~$75 in hydraulic lines (the nearly identical issue) and I will have my plow.
BTW, there is a used Kubota B2763A plow on that "E" shopping site for $799. I think a new Kubota and MF Tractor mount is priced in the $650-750 range. The MF should come with the correct hoses. That's less than 1/2 price for new MF with some potential worn (or not) hydraulic parts issues.
If you can not find the 60" blade there are rubber side extenders adding ~12" to most any blade you do find. The only thing I am leery about in selecting an ATV blade is getting a heave duty blade. Even these are in the $300-400 range plus a push tube mount in the $150-200 range for modifying to fit your tractor.
An alternative to a standard MF, Kubota, Case mount plow is the FEL blade mounted removable plow in the ~$1000 range.
6 Inch Snowplow