New Roof estimate - can someone check

[Sam Dal]

folks - I've gotten a roof replacement estimate for my 100 year old house that currently has hard slate. I could of course keep repairing the slate when leaks appear every 2 years in different parts of the roof but it's a little stressful when we are on vacations and I think I'm time for a replacement. Can someone take a look and see if $17,500 is a fair cost in NYC or should I keep shopping around? Roof size approx 2700sq feet

- gaf woodland lifetime designer shingles (gives the slate look similar to what's on the house) - If I choose plain architectural shingles, I'll save 2k

- TPO PVC flat roof over 10x30 extension

- soffit & fascia repair and replace where necessary (some of the soffit wood has gotten rotten and would need to be replaced)

- chose copper valley instead of aluminum (said I'll save $500 if going with aluminium)

- plywood mostly in very good condition because of great original quality of the wood (said I'll probably only need 3 sheets replaced)

- replace downspouts where necessary, maybe he'll replace 1-2

- install cobra ridge vent