Don’t sign the lease or buy bulk inventory until you can prove about 380 orders, or 437 boxes, a month. The model reaches break-even in Month 24, but cash bottoms at $508K in Month 25, so the go/no-go test is demand plus reserve, not just revenue.
1Order Proof380 orders/moValidate that monthly demand can hold near 380 orders, or about 437 boxes, at roughly $124 per order before you add more fixed overhead; that is the line between a real runway and a guess.
2Fixed Load$26.8K/moYear 1 fixed cost is about $26.8K a month from rent, software, insurance, utilities, CRM, legal, and three full-time roles, so any new lease or hire has to clear that bill.
3Margin Mix80.1% CMYear 1 variable cost is 19.9% of revenue, which leaves an 80.1% contribution margin; keep sourcing, packaging, shipping, and payment fees near plan before placing big orders.
4Capacity Ramp3 FTEUse the three Year 1 roles to prove the team can pack, ship, and fix mistakes at 380 monthly orders, and test packaging prototypes before any large print run.
5Cash Cushion$508K cashPlan for $143.5K of one-time startup spend, including $45K for initial inventory, and keep the $508K minimum cash need in Month 25 in view before locking in space or equipment.
6Launch CAC$35 CACYear 1 marketing is budgeted at $60K, so confirm that $35 customer acquisition cost can still feed a 15% repeat-customer base before you scale paid spend.