That’s too cheap. Copper is 129.00 my cost per 36 x 120 sheet. By the time you slit and roll form, or hand break a sheet of valley, there’s no money left for labor. At least in this area lol
I’d suggest if you’re going to do insurance work, purchase Xactimate. And if you’re going to request something, do it all at once so you don’t waste someone’s time.
Step flashing - copper $18.38/LF
Straight copper mill flashing is not a line item
14" copper flashing is $10.97/LF
Copper Cap flashing is $32.51/LF
Copper Counterflashing is $9.54/LF
We rarely use Xactimate pricing for copper as you are correct, it is almost always lower than existing market conditions. We get bid pricing and either add mark up or Overhead and Profit, then submit. That has generally worked just fine.