I know a bloke who imports all the die-cast belt buckles, buttons, sporran clasps and skean dubhs for 10p each from China and sells them for 50p each to a factory in Leeds who build them into Scottish paraphernalia that they export to homesick Scots all over the world, to make them feel better.
If they then sold those belts under the pretence that they had been “bathed in the positive ions of The Great Scotts of Olde and will transfer their positive energy via reverse osmosis to your atomic genetic makeup thereby making you more Scottish”
Then they would be in the same ballpark as these stickers.
But what you’re on about – buying goods at one price, adding value and selling at a higher price is literally the foundation of economics.