Why Your Amazon PPC Team Needs Access to Your Stock Data [The PPC Den Podcast]

Five years ago you could hire a PPC manager to handle bids, budgets, keywords, campaign types and structure, and that was the whole job. Today Mike argues that a good Amazon PPC marketer is just a good Amazon marketer and that the job now reaches into territory that used to be somebody else’s problem entirely: fees, refunds, logistics, and the one he thinks is most underrated, stock.

This episode is the case for letting your marketing team into your inventory data, and it starts with a client who flatly did not believe it mattered. Conversion rate is a product page problem and a PPC problem, they said. So Olena on the Ad Badger team built the chart that settled it – unit session percentage plotted against warehouse balance  and the split was clean enough to be uncomfortable. Above one threshold, daily sales never dropped below a number. Below it, they never climbed above one. Same for conversion rate. Same for Buy Box. Not out of stock. Just low.

That sent Mike down the rabbit hole of inventory distortion – the combined financial drain of overstocking and stocking out which is estimated to cost global retail and e-commerce somewhere between 10 and 30% of total sales volume, and which almost never comes up in a conversation about ACoS or conversion rate optimization. 

He breaks the damage into four buckets: direct lost revenue (which doesn’t happen evenly – half a million Buy Box checks found roughly one in three products has at least one location with a suppressed Buy Box), rank decay, the PPC tax you pay while competitors get cheaper clicks and better market share, and capital locked up in overstock.

Then the SOP. Three reports – advertised products, FBA inventory health, and detailed page sales and traffic by ASIN across two timeframes, dropped into Claude with a prompt, and you have a dashboard. Mike walks a real anonymized account doing about $400K a month where roughly 30% of the catalog was fully out of stock, top revenue drivers were sitting on days of supply you can count on one hand, and a couple of SKUs had over 1,000 days of supply. Plus the one nobody automates: nothing tells you when a product comes back in stock, which is exactly when you want the ads switched back on.

We’ll see you in The PPC Den!