Hmm. Out of 15 cartos, I've had 4 that were completely unusable right out the pack. That's a 27% DOA rate. I've only had 3 survive for more than a couple fills when people are touting, 10, 20+ fills. That's over 50% short-term failure rate. Those 3 are going strong though like a
tank, so I guess I expect a little more. Why not a <10% failure rate?
Rummage through the Chinese vendors. Cartos like these cost $.55. A kit with 2
batteries, 5 cartos, a wall charger, and a usb charger are $12. A case is $1.20. Passthrus are $2.50. PCCs (not bloog's) are $11.60. The prices drop in bulk. I know there's a lot of business overhead and I'm not condemning profit. In fact, I've tried encouraging my wife to expand her business to sell ecigs. There's a hell of a lot more margin here than what she sells.
My point is the issues can be easily fixed w/o impacting profit very much, and yes, I'd pay a dollar or two more for a safer product.