Check a small craft order’s costs before quoting

Check your own supplied small-order costs

Use an anonymized order and non-sensitive cost data you are permitted to share; no customer details are needed. Copy craft-cost-worksheet.md to my-craft-worksheet.md. This route uses one currency with a hundred minor units per major unit, whole-minor-unit prices, one upward-rounded percentage fee on the whole order price plus one fixed fee. A different fee/currency model needs separate formulas. Start a fresh chat with the prompt below and check the cost bases before continuing.
“Using MY CHECKED SOURCE, calculate each per-item cost × my quantity, each whole-order line once and labor for this exact quantity. Use integer minor units and exact fractions. For time-based labor use minutes × hourly minor units ÷ 60; apply only an explicitly supplied rounding rule or total, otherwise hold a fractional result. Show every source ID once and all subtotals. Keep unlisted real costs unknown; do not scale labor. MY CHECKED SOURCE: [paste complete validated inputs].”
Independently check each line and sum; repair errors before sending:
“Apply only MY FEE AND TARGET RULES to MY CANDIDATE ORDER PRICES. In integer minor units let P be price, C my checked listed costs, r the exact variable rate, f the once-only fixed fee and m the exact residual percentage of price. Calculate V = ceiling(r × P), R = P − C − V − f and compare R with exact m × P without rounding that target. Hold negative/missing inputs, unsupported rounding or fee bases, or r + m ≥ 1. SOURCE RULES, CHECKED COSTS AND MY EXPLICIT CANDIDATE PRICES: [paste].”
Choose positive whole-minor-unit practice candidates yourself; these are calculation tests, not chosen quotes. Check fee rounding and the exact comparison, then send:
“Find the minimum under MY COMPLETE VALIDATED MODEL. Require d = 1 − r − m > 0. In minor units calculate L = max(1, ceiling((C + f)/d)) and U = max(1, ceiling((C + f + 1)/d)); the extra 1 is one minor unit. Explain the bounds and test every integer price from L through U in order with exact fee/target comparisons. Show the first qualifier and, if positive, its predecessor. A predecessor alone is not proof; if the full exact search is not performed label minimum unverified. Do not decide an actual quote. COMPLETE MODEL AND CHECKED COST TOTAL: [paste].”
Independently verify the bound and every candidate in that interval; if too large to check with your available tools, keep the minimum unverified. Save all source-linked calculations, search evidence and unknowns in my-craft-worksheet.md and reopen it.
“Audit MY REOPENED WORKSHEET against MY ORIGINAL SOURCE and MY INDEPENDENT CHECKS. Reconcile price = listed costs + variable fee + fixed fee + residual. Check every cost basis, quantity-specific labor, fee rounding, exact target and minimum proof. On separate copies test a missing required value, revised quantity with old labor and an invalid rate/target sum. Preserve unknown real costs and any unverified minimum. Do not choose tax treatment, forecast earnings, send a quote or start checkout. ORIGINAL SOURCE, REOPENED WORKSHEET AND CHECK RESULTS: [paste].”
Keep the old version; correct, save/reopen and recheck any failed result. Every count, cost, rate and candidate comes from your own input, not the sample. The original advanced exercise remains sample-scoped. An own-input revision requires a separate complete source, explicit changes, newly supplied labor for any changed quantity and confirmation that unchanged amounts still apply. The owner reviews real cost completeness, actual fees and tax treatment before separately choosing any quote.

Help me check ordinary supplied small-order arithmetic, not make a quote or financial decision. First organize my input into per-item costs, whole-order-once costs, labor supplied for this exact quantity, one whole-order fee and my residual target as a percentage of price. Preserve source IDs and exact values; stop for my review before calculating. Require a positive integer quantity, one currency with 100 minor units per major unit, nonnegative whole-minor-unit monetary inputs, explicit labor quantity/basis, and complete fee/rounding rules. For fractional-minor-unit labor require my explicit rounding rule or whole-minor-unit total. This model supports only one percentage fee rounded upward to a minor unit plus a fixed fee once, with nonnegative variable and target rates whose sum is below 100%. Hold other bases, tiers, missing rules and contradictions. Explicit zero differs from missing. Do not assume tax, shipping, overhead or other real costs are zero. Later we will calculate, test candidates, prove a minimum if possible and audit a saved worksheet. Do not send, sell, charge, predict demand or decide tax treatment.

MY COMPLETE ORDER AND COST SOURCE
[Give order/version, item, positive quantity, currency/minor unit; each cost ID, amount, per-item or whole-order basis and source; labor explicitly for this quantity, minutes/hourly amount or supplied total and any rounding rule; complete fee basis, rate, fixed amount and rounding; your residual percentage of customer price. List unknown real costs, confirmations and who reviews the result.]

Check your own result

• Your quantity, each source cost basis and labor quantity agree. Changed quantity requires newly supplied labor, not automatic scaling.
• Your exact fee basis/rounding is supported; the fixed fee applies once, and the residual target is a percentage of price rather than a markup on costs.
• Fractional-minor-unit targets are preserved; the independently checked interval search, not just a predecessor, supports any minimum claim.
• All saved line totals reconcile. Explicit zero remains distinct from missing; unlisted real costs stay unknown and the residual remains before those costs.
• Owner review of real costs, fees, tax treatment and desired price stays separate. No quote, earnings, acceptance or sale is established.