Now you can show the delivery time per product in the shopping cart. But it would be better to have an extra option where you can also add the shipping time based on the chosen shipping method. For instance: delivery time for product A = 2 days, shipping method X = 1-3 days and shipping method Y= 4-6 days. Whenever a customer adds product A this his/her shopping cart and choose shipping method X the delivery time will be 3-5 days and when he/she chooses shipping method Y the delivery time for that product will change to 6-8 days. Now a customer will only see 2 days delivery time because the system does not take the shipping time into account.