How many orders can a price rise cost before it stops paying?

A small repair shop considers raising its standard service price from $40 to $45. Even if it loses some orders, it might take in more money. Whether the change helps the business depends on what it costs to perform each job and how many customers still book.

Calculate the old contribution

Assume each repair costs $15 in parts and labour that vary with the job. At the $40 price, the shop keeps $25 per repair to cover fixed costs and then contribute to profit. At 100 repairs a month, revenue is $4,000 and contribution is $2,500. These are fictional amounts, and the calculation assumes the service and variable cost stay the same when the price changes.

At $45, the contribution becomes $30 per repair. To match the earlier $2,500, divide $2,500 by $30. The result is about 83.3 repairs, so the shop needs at least 84 whole repairs to meet or exceed the earlier contribution. At 84 repairs, contribution is $2,520.

Work out the separate revenue threshold

The old revenue was $4,000. Dividing that by the new $45 price gives about 88.9, or 89 whole repairs to match or exceed old revenue. At 84 repairs the shop has revenue of $3,780, down $220, while contribution is $20 higher than before. It performs fewer repairs and incurs fewer job costs. That is why the two thresholds differ.

OpenStax’s economics guide explains why a change in price can affect revenue differently depending on how much demand responds. For an individual shop, the calculation gives a target order count. The response comes from customers. If 80 orders remain at the new price, contribution would be $2,400, below the old result.

Give the comparison a fair chance

Keep the service definition, weeks covered and booking channel consistent when comparing results. Record requests as well as completed work so a lack of available appointments is easier to separate from a change in customer demand. A holiday closure or an advertising campaign can change volume during the same period, so record them before attributing the whole change to price.

If a higher price changes who buys or which jobs customers ask for, recalculate with the new mix and costs. The fictional threshold applies to a single service with constant variable cost. Use it to ask a more specific question than “did revenue rise?” For this shop, the useful comparison is whether it kept 84 comparable jobs and what happened to the hours it no longer spent on repairs.