Plumbing and Electric Permit Fees In NYC

Hello,

I live in Manhattan and will be doing a renovation for my bathroom.

I’m in the process of reviewing contractor bids.

One contractor billed the following for plumbing and electric permits:
Plumbing: $2,800
Electrical: $1,500

On the NYC DOB, I found that an electrical permit costs $650.00.
I found that the Plumbing permit is based on the cost of the project.

I have three questions:
1) Are the fees the contractor is billing in line with other contractors in New York City?
2) Is the electrical permit fee fairly accurate?
3) Is the plumbing permit fee based on the total project cost accurate?

Thanks in advance