The frame for this comparisonProduct data is a practice, not a project.
Rithum's listings product begins at the upload and adapts what you send to each channel's spec — so the comparison isn't channel coverage, which is where its depth is, but what happens upstream of the upload: whether the record you keep sending actually gains each new marketplace's required attribute, or gets a per-channel value typed into an export.
01
Ground it
Mine every spec from every source.
Every value traced to a document you can open. The catalog is only as honest as what it was built from.
02
Align it
Aim the catalog at the buyer who actually buys.
Grounded data still loses if it answers questions nobody asked. Alignment is what turns specs into conversion.
03
Keep it alive
Product data is a practice, not a project.
Markets move, suppliers reissue, buyers change what they ask for. A catalog that is right in March is wrong by August unless something is watching.