Wholesale price ladder from cost to MSRP
Build a price ladder that protects maker contribution, retailer margin and order-tier discounts without relying on an arbitrary two-times markup.
Decision-ready ecommerce guides
Understand the number.
Understand the number.
Then change the decision.
Original, calculation-led guides for pricing, advertising and unit economics. Every example states its assumptions and links to an editable calculator.
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What ROAS does a $60 order actually need?
Five core cost assumptions, the formula, a 2.04x break-even threshold and one concrete campaign decision.
Start with the question
Practical analysis, not generic advice.
These guides explain the logic behind the calculators, show complete worked examples and separate illustrative assumptions from facts that need your own data.
Dimensional weight examples by box size
Compare scale weight with dimensional weight across common parcel sizes, then translate billable weight into a packaging decision.
30-minute ecommerce unit economics audit
Run one repeatable monthly check from source documents through order contribution, break-even acquisition, returns, fixed costs and a downside scenario.
Reconcile an Etsy order statement
Match one Etsy order to the Payment account, separate every fee and explain why the bank deposit is not the same as order profit.
Fixed payment fees and low AOV
See how a cents-per-order payment charge raises the effective fee rate on inexpensive products, then test price floors, bundles and minimums.
The true cost of ecommerce returns
Estimate loss per return, monthly contribution consumed and the return rate that would reduce modeled gross profit to zero.
Landed cost for a first import
Build a planning estimate from supplier quote to warehouse receipt, then test freight, duty and quantity downside cases before placing the purchase order.
Free shipping threshold that protects margin
Solve the minimum order value needed to fund seller-paid shipping without confusing revenue lift with contribution lift.
Discount break-even sales lift
Calculate the extra unit sales required to preserve contribution profit when a promotion reduces revenue on every discounted order.
Contribution margin vs gross margin
Use the right profit layer for pricing, advertising and operating decisions—and avoid treating gross margin as money available for ads.
Break-even ROAS from real costs
Turn a complete order-cost stack into a defensible maximum CPA and break-even ROAS instead of relying on gross margin alone.
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Use a calculator first.
Run the model in minutes, then return to the guide for interpretation and decision guardrails.