Vern, I understand that I can write an IDIQ and cut delivery orders; however, my thought was to create a more streamlined approach for a single commodity with an unknown exact quantity required. The initial PO award would identify within the info CLIN 0001, the maximum NTE quantity of 200 units @ $xxx/unit for all units ordered and the initial obligation would be placed as sub-CLIN AA with an order of 100 units at the established fixed unit price. Any additional orders would be added via modification as sub-CLIN AB, AC, etc... Based on the fact that we have established the full scope of the requirement up to 200 units at $XXX/unit creating our total contract value, the contractor would be required to deliver at the agreed upon price as we increase our quantity ordered up to that maximum NTE quantity. I don't see how the contractor can refuse to deliver without being in default.
With respect to incremental funding, I do not claim to know much, but do have limited experience with it in my past (this is why I am asking people smarter than me to help). I would add the 232-18 & 19 for availability of funds to cover the fact that I am not fully funded up to the max NTE quantity. Beyond that the limitations of funds clauses appear to be directed toward cost type contracts, so I am not certain what to include.
I am trying to save time and meet the mission needs, so if you have a reason why this can't be done, please explain, if it is because we already have a clunky IDIQ process, then I know that.
The BPA is another option, but not locked in on delivery and/or price, so I don't like it much, plus it is a little clunky like the IDIQ. (by clunky I mean it is an increased admin burden compared to this simple PO).