Start with the actual cost of delivering each retail package, then test the proposed price, mix and visit count together. A higher average ticket can still leave less operating surplus when volume falls or staffing costs rise. This guide separates operating economics from the cash needed to finance and maintain the business.
Open the private pricing tool · Read the fictional case · Get the worksheets
Define the population and period first
Use one complete month and mutually exclusive paid retail packages. Record the POS report, date boundaries, refunds, discounts and treatment of collected sales tax. Member visits are operating activity, not another retail sale at the menu price. Earned membership contribution belongs in a separately reconciled amount that this tool holds constant. A price change that also changes membership enrollment or usage requires a separate membership scenario.
Use actual realized ticket rather than the advertised price. Confirm whether an upgrade is already included in the package total; counting both as separate washes inflates volume. A refund relating to an earlier period can distort a simple ticket average. Resolve that timing with the accounting records rather than spreading it across an unrelated population. The revenue-verification case helps test the records beneath these assumptions.
Build a cost map that matches the decision
| Cost layer | Evidence to collect | How to model it |
|---|---|---|
| Variable resources | Measured chemical use, marginal water/sewer and energy, consumables, applicable processing fees | Cost per paid retail visit by package; count each component once |
| Committed operating cost | Current staffing plan, occupancy, insurance, software and recurring services | Monthly fixed cost for the relevant operating range |
| Step changes | Added shift, supervisor, service hours or maintenance arrangement | Enter a separate alternative fixed-cost amount |
| Funding and investment | Loan payments, tax planning, replacement projects and cash balances | Use the cash runway and equipment tools; keep outside this operating comparison |
Labor can contain both committed coverage and volume-related work. A utility bill may have a fixed charge, usage charge and demand component. Do not divide the entire historical bill by washes and then also include the same fixed charge in overhead. Likewise, digital payment or membership use does not establish a lower processing cost: inspect the actual statement and transaction population.
The SBA distinguishes fixed, variable and mixed costs in its business-planning guidance. Our scenario extends those concepts to multiple retail packages. Monthly equivalents must use the right period: a recurring quarterly cost divided by three gives a monthly amount; annual cost divided by twelve does the same. These conversions do not determine when cash is paid.
Read the calculation in the right order
For each baseline package, contribution equals paid visits multiplied by net ticket less variable cost per visit. In the alternative, weighted contribution per visit equals the sum of each package’s mix multiplied by its ticket less variable cost. Multiply that weighted amount by entered alternative visits, add the unchanged other earned contribution and subtract the alternative fixed operating cost.
The volume preserving baseline operating surplus is (baseline retail contribution + alternative fixed cost − baseline fixed cost) divided by alternative contribution per visit. If the numerator is nonpositive and contribution per visit is positive, zero retail visits covers that comparison under the entered assumptions. If contribution per visit is zero or negative, the tool withholds that threshold. A negative permitted volume decrease means the alternative needs growth.
This comparison precedes debt service, income tax, depreciation/amortization and capital expenditure. It is not net income, lender coverage or cash flow. The membership contribution tool remains the place for member-visit sensitivity and aggregate operating break-even; the tool here tests individual retail packages and a changed menu.
Fictional case: a larger ticket leaves only $60 more
| Input | Baseline | Alternative |
|---|---|---|
| Basic package | 2,000 visits; $12 ticket; $3 variable cost | 70% mix; $14 ticket; $3 cost |
| Premium package | 1,000 visits; $20 ticket; $5 variable cost | 30% mix; $22 ticket; $5 cost |
| Retail visits | 3,000 | 2,700 |
| Retail contribution | $33,000 | $34,560 |
| Fixed operating costs | $20,000 | $21,500 |
| Other earned contribution | $12,000 | $12,000 held constant |
| Operating surplus on this definition | $25,000 | $25,060 |
Alternative contribution is $12.80 per retail visit. Neutral volume is 2,695.3125 visits at the assumed continuous mix, about 2,696 for planning. That corresponds to a 10.15625% reduction from baseline visits. Exact package counts are whole numbers, so a rounded total does not promise the exact entered mix. At 2,400 alternative visits, operating surplus is $21,220, which is $3,780 below baseline. All values are invented teaching inputs, not observed prices or expected customer behavior.
Use evidence to challenge the alternative
Compare like periods, opening hours, weather exposure, promotions and service availability. Record changes in package migration and repeat visits rather than assuming price elasticity. Use the access and throughput tool to inspect physical constraints and the owner labor plan to identify continuing work. An entered volume outside the relevant range is flagged; the model does not automatically hire staff or expand capacity.
For prices involving payment surcharges, review New York’s disclosure guidance and actual processor/network terms. This model does not recommend or validate a surcharge. Carry supported operating assumptions manually into the monthly cash plan and keep payment timing visible.
Keep the scenario and its evidence together
Download the fictional case v1
Save the source period, package definitions, fee/resource assumptions and relevant volume range with the result. Revisit assumptions when the menu, staffing plan or supplier terms change. Bring unresolved cost or population questions to the next transaction conversation.
Sources and scope
Official and original sources checked October 17, 2026. These sources support the identified rules and methods; they do not verify a particular business or property.
- SBA — SBA · Plan your businessFixed and variable cost definitions; contribution and break-even principles; adviser review of acquisition documents. General small-business guidance, not a car-wash benchmark or legal opinion. Its quarterly-cost example contains an apparent arithmetic error: use quarterly cost / 3 for a monthly amount, not / 4. Do not import its suggested contingency percentage.
- NY Department of State — NY Department of State · Surcharge referenceDisclosed highest total price and actual credit-card processing cost limitations. Credit-card scope; network and contract rules require separate review. Effective fee rate is not an automatically lawful surcharge. No surcharge calculator.
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Verify the revenue · Normalize earnings · Model the cash flow