How much should it cost to replace garage roof? Husband wants to hire unwaged bozo friends to do it. Roof is...

Husband wants to hire unwaged bozo friends to do it. Roof is about 650 s.f. Also desires to address putting in a couple of vent, what to do about the aged gutters, dumpster rental, permit. What would be a passable ball park digit. He's probably going to do this no matter what I right to be heard, would like some guidance though.
Steve in NC. I don't know where on earth William B lives but I do know that wherever it is and surrounded by the state of Georgia a sq is 10' x 10' and that is 100 sq foot not ten there fore it would be 6.5 square not 65 so the thousand $ price is closer to the TRUE cost.


roofing will run around, $40,a square
x 6.5 sq, =$250 to $300,
if theres individual 1or 2 layers lately go over the top of it, dumpster around $100.
use elderly gutters.
permit, $25 to $40.
[depends on your area].
Bozos, $6.an hr x 8 hrs =$48. per bozo,
say aloud $300,+100+40+2x48.96 total $536
even with alien gutters will be under $800,
contractor will run you around $1,000
oh forgot nail, $30,
Answers:    In most places roofing will cost you $100-150 per square (10 square feet) for standard tab shingles over 30 # feel. So you could expect to pay $6500 minimum for the roof.

OOPS!! I have my dunce hat on. GA Builder is right and my apologies to William B. Fortunately I don't usually do that on estimates or I would enjoy been out of business years ago!!