This is potentially related to Shopping questions?.
The question Library/Big Marble staircase Room Tone is looking for a sound library that includes sounds that match what he is looking for. This seems like it is highly specific and not really any better suited to this site than it is to a google search to find it from a sound library directly.
Do we want to entertain questions like this or should they be marked as off topic for reasons of being product recommendations?
Note that I am NOT asking if Sound Library questions should be off-topic. I am only asking if requests to identify a library with a particular sound in them should be off topic.