I found this info -
If a retailer buys stamps direct from Royal Mail, they should resell them at the correct price.
If they buy them somewhere else, they can resell for whatever price they want.
Of course no-one is checking where anyone got their stamps.
becleverwithyourcash.com/corner-shop-stamp-rip-off/
Re painting metal bistro garden set
Army horses loose on London streets
To go through chemo therapy or choose not to?