10% all products
Buy 2 of X product get 1 of X product free
I add 3 of product X to cart - the price is $19 each, the total is $57. The coupon discount amount should be $19
I add the 10% off coupon, the discount amount should be $3.8 (10% of $38). However the discount being applied is $1.9 (10% off only 1 of product X).
Total discount being calculated = $20.90
Expected discount amount = $22.80
Is my expectation of how this should calculate wrong? Or is there some configurations I've not done right?