It is if you are after a low power high clock CPU.
The $1,199.99 5.2Ghz one already sold out after all.
The first chip hits Intel's advertised 5 GHz all-core boost clock with 1.250V and sells for $599.99. The second chip hits 5.1 GHz on eight cores with 1.287V and goes for $749.99. The third chip, which is already sold out, can do 5.2 GHz on all cores at 1.325V and commands a $1,199.99 price tag.