the only practical reason to price something at $_.99 that i can think of is to keep yourself in a lower payment processing bracket. for example, amazon flex p

the only practical reason to price something at $_.99 that i can think of is to keep yourself in a lower payment processing bracket. for example, amazon flex pay charges one rate for below $10, and another for $10 and up. the difference isn't large, but keeping a charge at $9.99 instead of $10 ends up netting you a few extra pennies, instead of losing 1.