My dealer said he would likely let me have the commercial unit for around $1500. I forgot the exact number but he had the price book out and I can read upside down.
There have various price points from full price, promotional and of course dealer cost.
The bigger engine and fuel tank will be a major plus as well as the brush guard are a huge plus. I wish they would put casters in it. I think it will be a good option for residential mowing crews.