I β€ Quantity and price! I'm NOT thrilled with the glow (color?) they give off. I put them in two ceiling fans and a lamp. The ceiling fan glow in the kitchen (color) is fine, but the ceiling fan glow in the living room (color) is not. It colors the room orange. π I like the "soft" light compared to the brightness of the LED bulb. They put out the heat! I'm afraid the lampshade will prevail π₯! I wish I had read the reviews a little better before getting excited about it and buying it. Now I have to wait for them to blow to replace them! π