system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: why are prices always a cent cut short? Like "5.99" "299.99"?
gpt
Two reasons.  1) people don't really pay attention to the cents so if the dollar is lower the price looks significantly lower.  

2) cents are used as code in store so x.99=full price, x.98=on sale, x.95 = clearance.