I have had this myself, whereby the cost of postage is extortionate to the value of items purchased.
If the seller is refusing to combine postage unfortunately as per eBay ( C.S) they apparently have the right - albeit morally it is not just.
If your items purchased are a low price , have you calculated if they are still good value even with the cost of the postage?
If not, I would ask the seller to post each item individually, so 5 parcels sent to your address being as you are paying for 5 lots of postage fees... they may reconsider to combine or offer a discount for multiple purchases. You do have the right to request this because you are paying for that service, if they then post in one parcel, take it up with eBay as postage fee extortion is frowned upon. If they do not honour your request you do have the option to cancel.
It does seem very unfair and appears to be a way for sellers to gain more funds by not discounting or combining postage, particularly if the item(s) has sold for less than they thought they would.
Appeal to their good nature... if there is other items they have listed, express interest etc etc... and request again.
Good Luck...
There maybe others here with further advice much better than mine.. I am just going on my experience.
