This seems to be a cut rafter roof, not trusses.
Price and time have little in common unless you are paying daywork
If someone gives you a price for the job, then its of no concern to you whether they take 2 days or two weeks.
If you are paying daywork, then this would be a weeks work for two. Of you are pay top daywork rates, then it will be a bit less than a week
If the guys are on a price, then they will want to complete it faster. Or you may want it dome quicker, in which case you pay a premium.
But don't expect to pay a low price and get it done quickly - you can't have both.
Whether the price is the market rate or not, well, you wont know unless you get more quotes to compare it