Of course ebay doesn't take in the cost of packing! That's an old rule change from about 10 years ago where you could only charge for the cost of the postage service, not the packing too, yes its not as enforced as much, but the rule is that parcel 48 small parcel service then you can only charge £3.55 for postage, you then of course end up with some sellers not giving a flying duck, like one of the first items I got after that change which was a wall clock that had a thin glass dome that had been posted in just a large paper envelope, needless to say it didn't survive the postage system!