established companies like osram make prices of energy saving light bulbs artificially high… so they can still sell the old model.
there is a vendor that has quality-tested products (last longer than any other light-saving light bulb of established manufacturers) for less than half of the price. (below 3euros a piece)
BUT u need to buy em in 10x pieces a pack.
but still… u will save… not only energy… but also co2, and maybe even the future of future mankind generations.