No Range Balls.
Now there is an interesting exercise in economics! My Driver fitting 3 years ago was indoor launch monitor, then outdoor range hitting. The indoor fitting was ball specific, but of course, they just went into a net.
My fitting in Michigan last month used range balls. However, the fitter pointed out that the range balls they use produce accurate spin results, and actually go a little farther than top end balls. In essence, their balls are not you average run of the mill range ball. Hell, they actually heat all the range balls during the winter. I have no way to know the validity of what I was told.
I would think that if you, as a Trackman owner/operator, insisted on using, Pro V1's, and not range balls, then you would have some issues. A few that come to mind are: 1) Initial and replenishment cost for the balls 2) Theft, unless you pick them up every night 3) Theft, in general, as in in the pocket of the customer 4) Lost balls on the range. 5) The customer that now insists on Callaway, or Taylormade, or .... 6) If you are also running a Driving Range, then you have the additional expense of sorting premium balls from range balls.
This would mean that you would have to charge more to recover the additional expenses. That is, unless you could advertise this approach and increase traffic. Maybe yes, maybe no. My thought would be that most customers would accept range balls. After all, what choice do they have.
Trackman installations are few and far between.
There is a Trackman installation, in Plymouth, Indiana (Swan Lake Academy) that did offer ball fitting. I forget the cost, but you got two dozen of the fitted ball along with the cost of the fitting. Presume this utilized Trackman.