We build stacked contribution margin — after shipping, after fees, after returns, after advertising — because that is the only margin that tells you whether an order was worth taking. Blended acquisition cost and blended marketing efficiency at the business level, not platform-attributed, so the same sale is counted once.
Profitability is rebuilt per item and per channel with marketplace commissions, fulfilment and storage penalties loaded in, and returns are run as a real line with a reserve against them rather than a surprise. Multi-channel settlement timing is reconciled properly, because each channel recognizes and pays differently.
Then the structural problem: inventory financing. Buying terms, turns, and the working capital facility modeled together, so growth is funded deliberately. Sales tax registration is mapped across every state and province where a threshold has been crossed — and Canada is heavier than most operators expect, because the provincial taxes are not all harmonized and each has its own rules.
Costing and channel analysts, plus indirect tax specialists on both sides of the border
With a named controller alongside them, a named backup on every seat, and the specialist bench behind both — all inside one fixed monthly fee.