Some examples of this on price tags: https://4.imimg.com/data4/VV/RV/MY-3648905/price-tag-250x250.jpg https://4.imimg.com/data4/VV/RV/MY-3648905/price-tag-250x

Some examples of this on price tags: https://4.imimg.com/data4/VV/RV/MY-3648905/price-tag-250x250.jpg https://4.imimg.com/data4/VV/RV/MY-3648905/price-tag-250x250... https://www.coloraccounting.com/uploads/2/4/8/0/24801950/published/p1_60.jpg?1527788559 https://www.coloraccounting.com/uploads/2/4/8/0/24801950/pub... https://encrypted-tbn0.gstatic.com/images?q=tbn%3AANd9GcQu8Dmw4hD8Az6VSydG1sq4Sr6ra_kHyuoFkw&usqp=CAU https://encrypted-tbn0.gstatic.com/images?q=tbn%3AANd9GcQu8D... On gas stations, the superscript is indicating tenths of a penny, rather than pennies. That latter practice is not exclusive to the US. This sign is from Germany or Austria I believe (LKW is German): https://c8.alamy.com/comp/D3XKHG/price-board-a-gas-station-with-high-gas-petrol-prices-D3XKHG.jpg https://c8.alamy.com/comp/D3XKHG/price-board-a-gas-station-w...