My concern is for the pup... if this woman is "setteling" for a mutt, because it falls into her price range... is she going to adore it, and look after it, like the treasure it is???

and
I would never let anyone adopt "the puppy" that didn't appear to connect with them.
and
I have sold mixed dogs (accidental breeding, both dogs were tested... for breeding their own kind

...) and sold them for $600

. That's up here in the great white north, but that is the going rate here.
Trust your gut...