Why would a bestseller have no ads?

Ad plans often follow launches or past winners, not current sales. A product can climb the sales chart through word of mouth or email while the ad account never catches up.

Could a product sell well because of ads for something else?

Yes. Some products are what people add after clicking an ad for another item. Check how often the bestseller is bought alongside advertised products before you move spend.

Can I run this with ChatGPT, Grok or Muse?

Yes. Any of them can use this prompt if it can read your Shopify sales and Meta ads data, either through a connection or from exported reports you upload.

How much spend should go to bestsellers?

There is no fixed share. Start by giving each top seller at least some ad coverage, then let the results guide how budget moves between products over the following weeks.

All playbooks

Get more customers · Leak

Bestseller missing from your ads

Your #3 bestseller isn't in a single live ad.

Ad spend drifts away from top sellers when creative is planned around launches or old winners. Connect Shopify and Meta Ads to Claude and ask it to match your top ten products by 60-day revenue to active ads and spend. Brief new ads for uncovered bestsellers, and question spend on products that don't sell.

1
Connect
- Shopify
- Meta Ads
2
Ask
List my top 10 products by revenue over the last 60 days. For each, how many active Meta ads feature it, and how much was spent on those ads? Flag top sellers with no ads, and products getting lots of spend that don't sell.
Paste this into Claude, ChatGPT, Codex or Cursor.
3
Act
Brief new ads for the top sellers with no coverage.

What it tends to findExample

The #3 bestseller had zero live ads. A slow seller had 30% of spend.

Watch out

A product may sell well because it's what people buy after an ad for something else.

Step by step

01Connect Shopify and Meta Ads to Claude read-only, through a connector or MCP server if available, or upload a Shopify sales-by-product report and a Meta ads export.
02Run the prompt so Claude maps each top product to its active ads and spend.
03Check whether a top seller sells mainly as an add-on after ads for other products.
04Brief new ads for top sellers with no coverage, and review heavy spend on slow sellers.
05Re-run monthly.

Questions

Run these next

Every number on these pages is an illustrative example, not a result from a named store. Read-only access is enough for every check; make any change yourself.

See where your funnel leaks

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