Anyone use a Euro Dropper bottle?

[SNjVaper]

I've been looking for dropper bottles. Bulk but BJ, Sams Club, Or Costco bulk. Not pallets of them. I've been making my own juices, and now some of my friends vape instead of smoke (thanks to me lol) and want bottles of my e juice. I've noticed really good prices on glass bottles with Euro droppers. I figured when they empty one, they can return it washed. It would save a good amount over time. From what I understand from emails from suppliers, you fill them and insert the euro dropper just like a regular dropper. When you tilt the bottle on a 45 degree angle, it dispenses 1 drop at a time. I was wondering if any one has ever tried them and what you think about them.