The original quote was "get an electric guy wire it" for $150. Not happening especially if he's going to have to run behind finished walls... at least I know my time is far more valuable than that, not even including the materials.I have done it several times. The wire is around $0.72 per foot and you will probably need a new 220 breaker which ranges from $10 - $40 depending on the make of your fuse panel.
Definitely if you're up to the task and are comfortable running cabling, connecting outlets and working in behind the panel cover by all means go for it (still against code though in most areas, but so is growing weed) ...the entire point here is that the OP isn't up to the task, and iirc, it isn't even his residence.
-spek