I need to rounds up the including vat sell price to closest £0.99 ie. if sell price for an item including vat is
£10.52 it rounds up the sell price inc vat to
£10.99 . In other words, so sell price always ends with
£.99 at the end.
And the website automatically will need to change the excluding vat price to exactly 20% less that the rounded up price.
I believe there is some event where I can hook a function to apply this round up logic?