That said I did a head gasket on my 7MGTE for about $400 including the gasket ($160), head disassembly/machine/reassembly ($100) and all the coolant, oil, etc.
You may be up for a set of manifold gaskets as well, but I didn't have this problem.
Also be aware that if the head gasket has been blown for a while, or if the motor has been poorly treated... it won't last long at all... my $400 fix involved an absolutely mint engine.