Gas water heater installation quotes seem too high

I need to replace my gas water rather quickly as the old one is leaking. I have the house water off for most of the day because the shut off valves don't work either.
It is power vented and there is an existing pipe in place.

I have 2 quotes so far.
From Rona for this unit: https://www.rona.ca/en/natural-gas-wate ... s-01355055
Price: $1750 installed which is about $400.00 for labour but the price of the unit is very high.

From Home Depot for this unit: https://www.homedepot.ca/en/home/p.powe ... 92787.html
Price: $1716.00 installed which is $858 for labor! They do say they will remove $105 of that since we did not agree right away so they can't do on the weekend at this point and we already paid $40 for the "measure/quote"

This is a breakdown of the labor:

Water Heater Measure 1.00 EA Y $40.00 $40.00
GAS WH INSTALLATION 1.00 EA Y $215.00 $215.00
WEEKEND, EVENING & HOLIDAY FEE 1.00 EA Y $65.00 $65.00
CUSTOM LABOR - IS WATER HEATERS 1.00 EA Y $538.00 $538.00

Custom Lbr:
Shut off Valve - 2PCS - $100.00
Grounding - $60.00
Over Flow Tube - $40.00
Tank Tops Adapters - $75.00
Venting (636) - up to 13# - $263.00

We did ask for the old shut off valves to be replaced so maybe that is fine?
I feel like things like grounding and overflow tubes should be included. Are they not standard?
We already have a venting pipe in place.
The guy they sent to "measure" was very terse and did not say anything about any of this when he was there.

Any comments or advice?

Edit: Those quotes are before tax.