I work at Petsmart (in the dog Hotel) and this dust bath always makes me laugh when I browse the small animal aisle! When I got Tug he came with a pink one like that. His big butt does not fit in it and to be honest he is to big to comfortably fit into the dust house I bought max (the second one you posted). I had Kin for awhile and he would step into Max's dust house, dig around but not roll in it. I just happened to put Tug's ceramic dust house out one day for Kin to play with and he instantly jumped into it and rolled all around. He must have had that one at his old house. I don't recommend it to be honest. I've been told that Chinchilla's can't be overweight and I'm a little unsure if most Chin's are Max's or Tug's size (Tug is about twice the size of Max, both are full grown) but if they are Tug's size then your chin won't fit in it! Although the image of Tug climbing in to the ceramic house and his big ol' chin butt sticking out was rather funny! :laughitup:
As for your original question, I have seen them in petsmart but they are always small, like for a hamster. They are pretty cool looking though and I did pick it up! I think I even said "If I had a smaller animal I'd get one of these" to my boyfriend!
Ashley