umm, this is seriously overpriced.
i had a guy in cork who did my whole bungalow ( 70 square meters) for 500 euros. He didnt power wash but did two coats of Dulux weathershield.
I had quotes of over 2,000 for the job also.
3 quotes is not enough sometimes in my opinion. This guy was the 5th quote i got.
The only real way to know if you are being screwed or not is
1) if it is a job you can do yourself, estimate how long it would take yourself to do the job and work out the costs from there.
2) if it is not a job you can do yourself, get someone you know to detail what is involved and the likely costs. If you dont know someone, use a forum like this to get approx costs.
Rusty