It seems to be an advertisement. I had an existing client contact me a few hours ago about a foreclosure on Perdido Beach Boulevard that was the same deal. I think there is a reason they don't provide a specific address!
Best thing to do is contact an agent. FYI, the ad you saw was for a lot in Bear point (where I live) and 1/4 acre or less residential lots run from about $40,000.00 to $75,000.