Where is the same product sold twice, and does it arrive differently?

59 of 14,042 indexed listings resolve to one entity across both marketplaces.

Each card is one product. The columns are what each marketplace says about it. Neither marketplace shows the other column. Where they differ, the difference is marked — that is the claim that one capability arrives in many delivery forms, stated by the catalogues themselves rather than by us.

Packaging and price are the publisher’s own declaration (E1). The “last saw a change” date is the marketplace’s own timestamp, observed by Common Tape (E2) — it attests that the listing exists and when the catalogue last touched it, never that the product works. A dash is a recorded absence with a stated reason; hover it. Common Tape indexes what these catalogues publish and does not claim this is every product either of them sells.