As you will see while going through checkout, it will be indicating £6.50 for a single listing purchase ( which would normally have been payment for a Royal Mail SIGNED for service ) and we require £7.50 for the Parcel Force delivery ... so that is how we have compensated for this website system, delivery price structure based on order value. Email me at [email protected] for a revised delivery cost if more than a single item of oil is required, include a snapshot of your basket content if possible or call Angela on 07442 496 186 ... Thank you.... Nic