I used to think that way too. But when the cheap bulbs I got, within months, either went dead, started to flicker, switches on then off at random times, it will eventually get to you. and when you buy from the same seller the next time, somehow the color shade will be different (bluish vs real white).

Ive bought more than 50 different pairs of LEDs for different applications and one way or the other they die. And dont get me started with HID kits ....Im already on the side that I will pay more from better retailers