# Why do gas prices (almost?) always end in 9/10ths?

**URL:** <https://boards.straightdope.com/t/why-do-gas-prices-almost-always-end-in-9-10ths/374497>\
**Category:** Factual Questions\
**Created:** [September 28, 2006, 3:36pm UTC](https://boards.straightdope.com/t/why-do-gas-prices-almost-always-end-in-9-10ths/374497 "2006-09-28T15:36:37Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![badbadrubberpiggy](https://avatars.discourse-cdn.com/v4/letter/b/57b2e6/32.png) [@badbadrubberpiggy](https://boards.straightdope.com/u/badbadrubberpiggy)\
**Post date:** [September 28, 2006, 3:36pm UTC](https://boards.straightdope.com/t/why-do-gas-prices-almost-always-end-in-9-10ths/374497/1 "2006-09-28T15:36:37Z")

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Well, the title says it all. What’s the story?

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**Author:** ![CookingWithGas](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/cookingwithgas/32/485_2.png) [@CookingWithGas](https://boards.straightdope.com/u/CookingWithGas)\
**Post date:** [September 28, 2006, 3:45pm UTC](https://boards.straightdope.com/t/why-do-gas-prices-almost-always-end-in-9-10ths/374497/2 "2006-09-28T15:45:54Z")

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This comes up all the time. Here’s a summary and links to other threads on the [Unofficial FAQ](http://www.seigle.net/gqfaq.html#gas).

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**Author:** ![badbadrubberpiggy](https://avatars.discourse-cdn.com/v4/letter/b/57b2e6/32.png) [@badbadrubberpiggy](https://boards.straightdope.com/u/badbadrubberpiggy)\
**Post date:** [September 28, 2006, 3:50pm UTC](https://boards.straightdope.com/t/why-do-gas-prices-almost-always-end-in-9-10ths/374497/3 "2006-09-28T15:50:37Z")

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Thanks for the link! What an appropriate user-name to answer this question, too.