250 units is in the ballpark of where they are operating now. It is what they are ramping up to produce. It's to be seen if they really sell that many units for more than a year above and beyond distributor models.
My wild guess is that if they are selling 1,000 units a year they can scale up manufacturing to lower the unit costs and obtain better financing.
One question that nobody here can answer is if the distributors are put in a position of buying units and then installing them for protracted test periods in hospitals? That will force more units to be bought by them as they generate interest, without end user purchases. Also, to make it attractive, what kind of discount Viking is selling the product to them for, ala putting their own skin in the game?
I don't know how the sales process works with units like this, nor how the money flows. However, if they do sell 250 units in the next 12 months I will be VERY happy. That means they either added that many distributors (not so great), distributors have those units in the field being tested (pretty good), or hospitals are buying them (great). If the later, it could snowball from there as docs start getting excited about the technology and improved surgical capabilities.