POSTAGE should mean POSTAGE COSTS not "hidden profit".
I do my best to quote Actual Cost plus cost of plastic bag & envelope/packing.
But if you buy more than one item, you need to allow me to COMBINE the costs BEFORE Check Out so I can do my best to get it right for you.
If postage should work out considerably cheaper than I quoted, I am happy to refund excess postage costs IF you give me the chance. I believe intentionally over-charging on Postage is totally WRONG!!