If you do buy multiple items and buy pre-paid postage, could you ask for the weight of the parcel and size before purchasing - so not to incur any unwanted & unexpected postage expenses.

Also since Ebay UK has made it mandatory for all private users to use the simple delivery - the buyer checks out for all items their end and the buyer can combine the postage - if you put all items purchased together in your cart and pay for all items together the postage will automatically be combined.

Many thanks