API sales after tax and not before

It would be really nice to have the amount of the sales after tax and not before as this differs from users to users…it is a bit annoying to do this calculation ourselves which might end in buggy applications or incorrect information being delivered.

Any thoughts on this someone from the API development team maybe? Also given the current circumstances (that the info is before tax) any suggestions on how to handle this? Giving information on sales to a user before tax is not relevant, so some calculation would have to be done to give the actual amount the user has made?