"A linux box running a hacked up version of Mac OS X" is a contradiction. It runs either one or the other, I think the OP was noting that the same price can get

"A linux box running a hacked up version of Mac OS X" is a contradiction. It runs either one or the other, I think the OP was noting that the same price can get you much better hardware if you are willing to ditch the Mac, which is true. In this case though, they are offering to serve an OS X desktop environment, not just web sites, so there's one thing that can't be done (well) on Linux.