I got my anti guzzling bowl from my local pet shop - paid $23 for the largest one, they had 3 sizes to pick from.
The wobbler I bought from a pet barn and paid $40 for. I've since then seen them cheaper online
Durability- Monty can not get his mouth fully around it and if you know the size of a Wei's mouth then that's pretty impressive. He has had it now for 3 weeks and it's scratched from teeth marks but that's to be expected. There is no way he will be able to destroy it, much to his annoyance!
Oh and i put the wobbler in the dishwasher - comes up a treat!!!
What's everyone putting in their wobblers?