Ill admite, iv had my girl give birth without knowing she was pregnet. But then again.. im not selling them. If shes trying to breed chins then sells a grown female without knowing shes pregnet (or at the very least, wait the 11 and make sure shes not) Then this person shouldnt be breeding them to begin with.
As for the cage in the second picture, that should realy be replaced. Or atleast covered up to make it safe. Wire cages liek that are dangerous. Not only uncomfortable for the chin, but they can realy hurt themselves on them. Its not hard for a chin, baby or not, to get a leg or foot cought in those opening. And if they do, they (and you) have a seriosu problem.
Now im fully aware how hard it is to find a baby suitable cage. EXPECALY on short notice. But you dont want to risk injury or worse to any of your chins.
Also the litter aint the best either. Look likes the blue Carefresh litter. Which i admit i used for a long time to before i new better. But if a chin ingests that it can cause impation which could kill them. And since msot chins chew everything they can get their teeth on, its logical to assume they will.
Litters can be very hard to choise sometimes as well, since so many things can be hazerdouse if they ingest. Corn, paper, clay, all bad for chins. Fleece liners are great if you have the means to wash and dry them as needed. (In an apt, i dont unfortionitly) So iv been useing aspen shavings. (Note that ceder shavings are extremly harmfull to them).
Also note, im not critazing or anything. I wouldnt do that. Just trying to make sure the pets have a long and healthy life. And owners need to be informed. A good knowledge base is always the best begining! (wish i had one before my brother showed up at the door asking me to watch his for a while... like 6yrs ago lol)