I like these water feeders but dislike two things, how fragile/delicate they are and how overpriced they are. I wouldn't recommend buying these considering these two things, being on the brink of spending more money still!
Ultimately if they cost a lot less I would recommend these but their price is outrageous for cups that break easily.
This is a cleaner, more efficient way to provide water for our chickens.
My chickens love these things and it saves us a lot of work. Ours is attached to a huge rain water barrel that we fill. They never run out and the water stays fresh.