Sellers put real rigour into sourcing, pricing and positioning. The cash side
usually gets a spreadsheet, because until now that was the practical option —
and a spreadsheet is a snapshot of a business that moves month to month.
None of it is exotic. It's just connected. Your real selling price isn't the list
price — it's what survives the promotional stack, blended across events, permanent
deals and whatever it takes to stay competitive in the moment. Then Amazon takes
its share: referral, FBA, AWD, storage — each on its own basis, none of them
optional.
That price sets contribution per unit, and contribution per unit sets how much traffic
you can afford to buy. So CPC and conversion rate stop being reporting metrics and start
being budget constraints, alongside the things that move both quietly: Vine,
Creator Connections, listing quality. And every unit that sells pulls the reorder
closer, which turns inventory back into a cash question.
Model those together and the numbers that actually govern the launch fall out of
it: true landed unit cost with nothing left off, contribution per unit, the
break-even month, the peak cash requirement, and the month the business turns cash
positive.
That's the job. And Keyydo does it properly.
Who builds it
Keyydo is founder-led. Behind the model sit more than 20 years of financial modelling
and a working knowledge of Amazon US at the level of mechanics — referral, FBA,
AWD and storage each on their own basis, what survives the promotional stack,
lead times and what they do to the month a reorder lands in.
The two disciplines are the point. Marketplace knowledge keeps the inputs
honest; the modelling turns them into a peak cash requirement and a break-even
month. Either on its own gives you half a picture.