People buy data everyday, its part of marketing - they sell the same lists over and over. Suppose depends on what you want to target, facilities managers I would imagine are used to being bombarded from every industry, every day. Myself, just my own opinion, would concentrate locally first - tie up the ones that decisions are made at local level. Might be smaller but still work. I think we all probably know how difficult the process is with dealing with large corps. Im just passing on the guy that I use, older the data, cheaper it is. If you want email addies, employee numbers, etc etc and newer it gets dearer.
