Ideas

When applying a percentage-based discount, the prices calculated will most of the time end up as a non-rounded number, for instance: a 99 SEK product with a 20% discount would be 79:20 SEK. For display purposes, a rounded number can be shown on the site, but the actual decimal number will be used for payment, which can look a bit odd.

Suggestion: add an option on percentage-based discounts, that makes it possible to choose whether the resulting prices should always be rounded to the nearest full unit of the currency used, and for that price to be used throughout the entire platform, including payment.