Hmmm... Looks like a prime place for puppymills to get more "stock" if you ask me.
One of the ads I clicked on is selling Pet quality Yorkies with full breeding rights for $650.

Doesn't seem right to me at all!
Or how about the Show quality Yorkies for $600? Sounds like a deal to me, maybe I should snatch one of those guys up!
There's another one for a "Mini Maltese"... What's a mini maltese? I didn't know they made those in different sizes now too! I bet you she has a few different sizes to choose from.... Standard, Toy, Mini and Teacup
(Correct me if I'm wrong here....)
I wouldn't doubt that most of these are from millers. I can see a few of them that are probably "accidental" breedings and now the family is desparate to get rid of the puppies. But come on! Me personally, I would stay far away from anybody placing ads on there!