Our client wants to round the price with a promotion applied to 2 decimals, because the ERP was setup to allow only 2 decimals and they want all calculations with 2 decimals.
For example, a customer ordered 101 EA with a price of 8.973 / EA. The total from Optimizely is 101 * 8.973 = 906.27. Even if in the screenshot you can see only 2 decimals (frontend, there are 3 when the calculation is done in backend.
The ERP use the price 8.97, which means a total of 101 * 8.97 = 905.97. In this case, there are difference between Cart/Checkout/Order Confirmation and Order History.
We would need the possibility to do all the calculations along the website using only 2 decimals.