UN Comtrade Database: Trade value when no quantity reported

I am working on a project where I need the trade data for a specific type of generator and I’m using the UN Comtrade database. Some countries report no quantity (quantity code 1) but do report a positive trade value. I am thinking that they do import this type of generator but do not provide the quantity but I haven’t found any documentation about this happening so I am not positive.

Does anyone know why there may be trade values that do not reflect the number of reported units?

Additionally, I’m confused by the actual reporting of trade values. This document (page 6) implies that CIF trade values and FOB values could be reported, depending on what the country does. However, I don’t see any field that would indicate another trade value or if an import value is CIF or FOB. Could anyone shed some light on this?