About 5 minutes when I go to pick up a2 for myself. Yesterday got 2 people in 5 minutes. If i'm doing the shopping and see someone with more than 3 bottles of milk in their basket, as I did last week, this guy had 6 2litre bottles for his kids, so I pulled him up to tell him about a2. He was very grateful and said he would google it when he gets home. That only took about 3 minutes.