Gena, I’m not sure what you mean by “how many they sell when they charge freight” Can you please clarify or reword that question?
Yes, we are aware that the $99 is on top of storage. Amanda’s point is that if you consider the storage costs of FBA vs 3PL then you are sure to be much better off with the 3PL in Q4. As far as the $99 goes, I reiterate that you need to look at that as a per-unit-cost. So, how many units do you expect to sell each month. If it is more than 396 then the 3PL fulfilment costs are better than Amazon FBA fulfilment costs.
I still strongly suspect that you’ll find the 3PL costs will be much better than FBA (especially in q4)