That's retail rates. Depending on the size of the bulbs, you could likely ship them first class for around $1.5. packaging might be another $0.20 assuming the b

That's retail rates. Depending on the size of the bulbs, you could likely ship them first class for around $1.5. packaging might be another $0.20 assuming the bulbs are already in stuff boxes. But still, not much room for profit. And from my experience, a lot of big box sellers will just put it in a huge box and pay a much higher rate than necessary for shipping.