Interested in a PVC oyster shell dispenser

[ThinkingChickens]

I've seen a few clever BYCers make these gravity fed oyster shell dispensers out of PVC. I'd love to purchase one, or see detailed plans. What does something like this run?

 

[zookeeper15133]

Here are links for 2 pages from the Learning Center. For oyster shell I would use 2" pipe. I would guess about $5. You don't need glue.
https://www.backyardchickens.com/web/viewblog.php?id=25889-simple-pvc-hopper-type-feeder
https://www.backyardchickens.com/web/viewblog.php?id=44920-the-pineapple-diner

There is another one that you use a piece of pipe and a Y on the bottom. Search it and you will find many more.