Guesses this edition will not make

No duty percentage

The carrier and the declaration interact. A blog does not settle it.

Ask the line inside Spanbuy.

A shopper comparing a US line should still pass QC first. A broken cable is a broken cable in both places. Spanbuy's photo of the printed spec is the document. The thumbnail is the advertisement.

Next: the spanbuy spreadsheet, Electronics on W2Cfind, and the FAQ.