Hi aoysgelt,
Foam Factory (AKA FBM or any of their other URL’s such as Foambymail, mattressbymail, usafoam, foamdistributing etc) is not a business I would personally recommend or support.
Post #2 here talks about some of the reasons why and a forum search on FBM (you can just click this) will bring up more comments about them.
They are “cheap” … and for some people this may be more important than knowing what they are actually buying … and reason enough to buy from them.
Each person has a different risk tolerance of course but when it comes to what I sleep on … I tend to take risks that are based on knowing what I am buying 
Phoenix