Zelvorm Price Lab · feature
From your own sales: how much units fall when the price rises, measured only with 2 or more prices and 14 days at each.
If you've sold a product at different prices, Price Lab fits a straight line to the log of units a day against the log of the price. The slope is the price elasticity: −2 means a 1% higher price sells about 2% fewer units. It shows the price levels, days at each, the fit (R²) and how sure the reading is (t-value), and calls it weak when the data can't support it.
How to use it
- 1Sell at two or more prices for at least two weeks each (a price test helps).
- 2Open the product: What your own sales say shows the reading.
- 3Use a weak reading as a hint only, and test before acting on it.
More from Zelvorm Price Lab
The price that earns the mostThe profit-maximising price from your elasticity and costs, kept within 10% of the prices you've actually sold at.Read more Competitor pricesYour price against competitors you watch in Commerce's Store Spy, a price index, and an alert when they undercut you.Read more Price tests you can trustHow many visitors a test needs before it starts, and a plain verdict with a p-value and the profit difference when it ends.Read more