UPDATE: owing to the closure of our local PO and the associated additional costs, I have been forced to increase my postage charges. (My nearest convenient PO is now a four-mile drive away, rather than a ten minute walk.) But, I will always combine postage charges, and will continue to keep them as low as possible. Since it now costs me up to £1.45 to post a single CD, (and I don't charge buyers anything for the packing materials) I think £1.49 is quite reasonable, don't you? :o)