I currently offer free shipping in the UK on all orders.
I am thinking about changing this to free shipping on orders above £30 and £3 shipping for orders below £30. My thinking behind this is hopefully to encourage people who are going to make a small purchase to add to their order to get the free shipping.
What I don't want to do is drive customers who are looking to make purchases below £30 away.
Can anyone please advise me on the best way to make this decision? What factors should I look at before deciding?