Flag sensitive rows while you shortlist
Perfume, battery banks, wearables, aerosols, magnetic goods, and some powders should be marked “line-check” before you pay Stage 1 if freight is already tight.
Spreadsheet titles rarely say “this ruins the cheap line.” You have to ask that question yourself.
If the haul depends on one restricted filler item, price that item against the line upgrade it may force.
To organize that shortlist, browse the spreadsheet by product category and open each item’s details for research. Inclusion in the catalog does not confirm that an item is accepted on your shipping route.