subtotal minus discount
I offer free shipping for orders £40 and over (with Royal Mail plugin). I use coupons but sometimes I don't want to give free shipping if the total order value is below £40. Currently shipping is taken from the SUBTOTAL which doesn't include the coupon. I would like it to be taken from the TOTAL which does include the coupon.
Item costs £45 - free shipping.
Coupon is £10 off - not free shipping.
Shipping is calculated from subtotal which is £45.
Shipping should be calculated from total which is £35.
I currently use a child theme with custom code but would love this to be part of an official plugin.