I found the auction page. I’m not sure if the furniture comes with the houses, or if they have just been “staged” by firms with a deep grudge toward the homebuilder. You can see the images here as html. The one with the black dining room with those black things on the table looks like it’s a set for some Hollywood movie entitled “The Blair Witch House Hunt”.
Lime green sitting rooms? Unbelievably vast wallpapered bathrooms in tragically poor taste? Missing bathroom doors? Ugh. I had a (very personal) strongly negative reaction to what seemed to me to be monuments to bad taste, bad values and bad family karma. In the main these houses did not look liveable to me; they reminded me of a story my mother once told about neighbors her mother used to take her to visit as a girl. She was quite vehement about the fact that the house was not for living. She said there was nowhere she felt like she could sit down, and she used to flee to the yard and play with the dog, who she felt was similarly afflicted. She said it was an unhappy house with no room for people.
I think perhaps these houses aren’t selling because they are not well designed, and the poor decorating effort reinforces the bad design. Houses built for ostentation still need to have liveable nooks in them. I would caution about placing too much weight on the eventual selling prices as a reflection on the overall housing market.