The gadgets that become a millstone - buy electric toothbrush

Christmas is coming, the goose has been poisoned and we are ready to exchange our pennies for some gadgets that do not meet the requirements.
The trouble is that consumer electronics manufacturers have understood what marketers call the razor and blade principles.
This is when the manufacturer sells the main goods at a minimum profit or even a loss, and then becomes rich on the replacement.
Now you can buy an electric toothbrush for about £ 10, but it will cost almost as much money to replace a pack of heads.
All of a sudden, everyone is using the same strategy.
Harman Kardon, an audio electronics company, sold a very decent universal remote for about £ 50.