As a gut feeling/WAG, I'm betting there's a missing zero on the printed price of the Augmented Healing. It makes no economic sense that you can buy a new body for less than it costs to get a nice car.
$350,000 Is around the right price range, I agree. But there is still the time thing. i did some back of the envelope numbers and you'll see what I am talking about..
A leg is about 20% of the mass of the human body. So for a 200 lbs man, that's about 40lbs.
It takes a week for the procedure, which is 168 hours.
So, a 200 lbs man is re-growing his leg at a rate of around 0.25 lbs per hour!
which makes the cost: $208.33 an hour... per quarter pound.
(You see where I am going with this??? Yes I am THAT
evil capitalist

)
So why Bother with a PERSON! THIS tech right here is a license to print money!!!!
Just add a cow.
At 2000lbs, and 20% body weight a limb... That's 1600lbs of meat!
the cow regrows those 4 limbs in 168 hours, or 9.5 POUNDS of meat an hour..
or $208.3 per 9.5 lbs.... or $5.4 per quarter pound....
(Less then what you pay for a Quarter Pounder from Mickey D's....)
*****
Or, on a more chilling thought,
this tech could help "solve" the "Ghoul problem".... in a very ghoulish way.