Selling products and running the numbers

Fees, margins, break-even, inventory and cash flow for people who sell things.

• 3D Printing Pricing Calculator: Price a Print From Your Own Costs

  A 3D printing pricing calculator worked by hand, filament, machine hours, failed prints and your time. One example part prices at $54.71.

• How Much to Charge for Crochet Items, Blankets and Baby Blankets

  How much to charge for crochet items, from your own hours and yarn. One example: a scarf at $166.55, a baby blanket at $664.47, worked step by step.

• How Much to Charge for Embroidery: Per Stitch, Logo and Digitizing

  How much to charge for embroidery per stitch, per logo and for digitizing, from your own costs. One example: $1.6827 per 1,000 stitches plus $2.90 a piece.

• Laser Engraving Pricing Calculator: Price Each Piece From Your Costs

  A laser engraving pricing calculator worked by hand, setup, blanks, laser minutes and your time. Example, 12 pieces at $11.06 each; one alone, $52.53.

• Screen Printing Pricing Calculator: Build Your Pricing Matrix

  A screen printing pricing calculator worked from your own costs, and the pricing matrix it builds. One example: $20.20 a shirt at 12, $8.98 at 144.

• Soap Making Cost Calculator: Cost per Bar, Worked Through

  A soap making cost calculator, worked by hand: ingredients, molds, packaging and your time per bar. One example batch costs $5.60 a bar.

• Candle Pricing Calculator: How Much It Costs to Make a Candle

  How much does it cost to make a candle? In this worked example, $6.92 in materials and $12.80 with your time, priced to $19.69 wholesale and $29 retail.

• eBay Fee Calculator 2026: eBay, Poshmark and Mercari Fees Worked Out

  eBay, Poshmark and Mercari fees from each platform's own page, worked to the cent. One $48 coat leaves $26.31, $28.15 or $24.15 profit.

• How to Price Baked Goods: a Cake Pricing Calculator, Worked Through

  How much to charge for a cake: ingredients, your hours, fixed costs and a markup. A worked example from $13.01 of ingredients to a $112 cake.

• Vending Machine Profit Calculator: What One Machine Makes a Month

  Work out what a vending machine makes a month from price, fees, location commission and route time. One machine, worked: $208.13 a month.

• Break Even ROAS: The Formula, Worked on One Order

  Break even ROAS = 1 / contribution margin. On one illustrative order that is 1.92, so a reported ROAS of 1.6 loses $5.51 an order. Formula and worked example.

• How to Calculate Wholesale Price: the Formula, Worked Through

  Wholesale price = unit cost / (1 - target margin). A worked example from a $6.40 materials cost to a $29.00 wholesale and $58.00 retail price.

• Amazon FBA Fees 2026: Fee Chart, Calculator and Unit Margin

  Amazon FBA fees for 2026, worked to the cent: a $24.99 unit keeps $10.39, not $18.99. The fee chart, the formula, and the $10 price-band cliff.

• Break Even Analysis Formula, Tables, and What a Discount Costs

  Break-even point = fixed costs / (price - variable cost). Worked example, break even analysis tables, and why a 10% discount needs 33.3% more sales.

• Cash Flow Forecast: How to Build One, and Why Growth Burns Cash

  A business growing 20% a month books $118,742 of profit and still runs out of cash in month 10. How to do a cash flow forecast, with an Excel layout.

• Net 30 vs Net 60: What Waiting to Be Paid Actually Costs

  Net 60 on an $8,000 invoice costs $157.81 to wait for. A 2/10 net 30 discount costs 37.2% a year. Net 30 meaning and the math, worked.

• Reorder Point Formula with Safety Stock and EOQ, Worked Through

  Reorder point = daily demand x lead time + safety stock. Worked example with safety stock and EOQ, where ordering 86 at a time costs $2,222 a year vs $1,039.

• Etsy Fee Calculator: What Etsy Actually Takes, Worked Through

  Etsy fees for US sellers, worked to the cent: 18.5% of a $5.00 sale, 10.1% of a $75.00 one. The formula, the curve, and digital products.

• Markup vs Margin: the Chart, the Formulas, and the Pricing Trap

  A 50% markup is a 33.3% margin. Conversion charts both ways, the two formulas, and a worked example of the pricing mistake they cause.

• Menu Pricing Formula and Food Cost Percentage, Worked Through

  Menu price = plate cost / target food cost %. But cost the plate on raw weight and a 30% target quietly runs at 50.6%. Worked example inside.