Sort a collection by what sells

Use this when a collection should put stronger products first and push sold-out products down.

Steps

Open Rankify and create a strategy. Start with sales, or with units sold, rather than a long list of fields.
Add stock as a second signal if sold-out products should sink.
If size order matters, set the variant option and how ties break, so a fuller size run can rank higher.
Pick the collection from your list. Do not paste an id.
Preview the order. Pin, hide, or push down any product the preview got wrong.
Publish. Open the collection on the storefront and compare the first row with the preview.
Leave it for a day, then look at the daily list of collections with few products or a broken size run.

Run a comparison on one collection by picking both strategies from your lists. Keep the one that matches how you merchandise.