I ordered these buildings as a way to get some quick terrain for Infinity. I was impressed with the quality of textures and the variety of options. The walls themselves have three different options for standard grays, plus one that is more of a sand color. There are also many options for details, which would allow you to fill the table with unique buildings.
The buildings themselves are more solid than normal with paper, likely due to the boxy designs and double-thick walls. This allows both the buildings and bridges to support multiple metal miniatures. Construction time seems to be 30-45 minutes per building.
Building B0 has a tunnel through it. While this is a very cool idea, the tunnel itself is too small to actually put models in. Two of the buildings (B2 and C2) do not have options for doors. As their dimensions look similar to B1 and C1, it could be possible to combine parts, but I have not tried this.
When I initially purchased the file, there was an issue with one of the roof textures displaying all red. I sent an email to their contact email and, within the day, I received a response indicating that the problem had been resolved.