It's rubbish... in 1x packaging it's a 1600 lumen bulb, in 2x packaging it's 1100 lumens and in 4x it's 570 lumens??? You'd think the price would be attractive if you bought a pack of 4, but it's not the same product at all. You have to stop grouping together items that have nothing to do with each other, I'd call that deception!