Sale Catcher
Catch tags whose price after the discount is under $50. Catching a bad deal costs a life. Tap a lane or use the arrow keys.
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How to play Sale Catcher
Price tags such as $80 -25% fall down three lanes. Move the basket by tapping a lane, or with the left and right arrow keys. Catch a tag when its price after the discount is under $50, and let the rest fall past. Catching a bad deal costs one of your three lives.
The math behind it
A sale price is the original price times one minus the discount: price × (1 − discount). An $80 item at 25% off costs 80 × 0.75 = $60, so it is not a catch. A $60 item at 40% off costs 60 × 0.60 = $36, which is.
A shortcut is to take off the discount a step at a time. 25% off is a quarter off, so take away 80 ÷ 4 = 20. 50% off is half, and 10% off is one tenth.
Why it matters when shopping
Stores often show the percent off rather than the final price, and a big percent on a high price can still cost more than a small percent on a low one. Work out the final price before you decide. The discount calculator does the exact math, including stacked discounts and sales tax.
Frequently asked questions
How do I work out a price after a discount?
Multiply the price by one minus the discount. For 30% off $80, that is 80 × 0.70 = $56.
Is 50% off always cheaper than 25% off?
Not across different items. Compare final prices, since a 25% discount on a cheap item can beat 50% off an expensive one only if the final price is lower.
Do I move with the keyboard or the mouse?
Either. Click or tap a lane, or use the left and right arrow keys.
Is Sale Catcher free?
Yes. It runs in your browser with no sign-up.
Related calculators
- Discount Calculator: Discount calculator: final sale price and savings after a percent-off discount, with optional sales tax.
- Percentage Calculator: Percentage calculator: find X% of any number, or what percent one number is of another.
- Sales Tax Calculator: Sales tax calculator: add state and local sales tax to a price, or back the tax out of a receipt total.
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