A building next door to one of my offices was a datacenter/colo facility. It has sat vacant for quite a few years, and the new owner contacted me yesterday about some unrelated items. I asked about the raised floor and she said "all available, dirt cheap, come over and look".
Sometime next week I will go take a look, but I know folks here have occasionally expressed interest in getting a section of raised floor for their "machine room". If there's interest, let me know. Best, J