All Frameworks
9 articles in Finance
Amazon's 15% referral fee becomes a 42% all-in take rate after FBA, storage, PPC, and returns. Etsy is 26%. eBay is 22%. Compare the actual cost across channels.
At $1.2M inventory with 8% cost inflation, FIFO vs LIFO produces a 4.7-point gross margin gap and a $20K annual tax difference on the same physical business.
Your '2.5% + $0.30' rate is operationally 3.18%. Here's the 5-layer cost stack and the negotiation thresholds where each tier actually unlocks.
A profitable 28%-net-margin eCommerce business can run out of cash in 90 days. Here's the 13-week model that catches the trough before it hits.
Gross margin says 65%. Contribution margin says 14%. Here's the model that closes the gap and the variable costs your accounting system hides.
Most eCommerce operators price on gross margin and miss the true variable cost stack. Here's the contribution margin model that reveals your real price floor.
The cash conversion cycle is the silent killer between $30K and $80K/month. The math behind working capital traps, five levers to manage them, and when to finance growth versus when to slow down.
80 percent of eCommerce businesses fail within two years. The break-even math that separates them from the 20 percent is not complicated — it is just ignored.
Most operators undercount tool costs by 40-60 percent. The full three-layer cost model — subscription, integration, and switching — pricing pages hide.
