The difference in price to other dynos isnt really enough to make the cost prohibitive IMHO if its easier to market.
If you have to spend longer building a decent brand etc for your own facility because you cant market it with the latest must have dyno name, thats all money lost that quickly eats into your savings on the dyno itself, and all that time you are paying an operator to stand around doing nothing, the floorspace is costing you money either in rent or it not using it for other things etc, so im not sure that its quite as clear cut a decision as you make out. Having a dyno that will essentially sell itself, is a good thing to put in a business plan IMHO when you need to be operating at a profit sooner rather than later.
Not my decision though thankfully, lol!
Will certainly feedback your info to him too