I was being generous with the 500 figure as well.£500 a day is unreasonable no one can reasonably dispute that although some probably will.
The total quote value was 2350. The boiler and flue can be bought for 1050 - I have to assume that the installer can get it for less, but let's let that figure lie.
The only materials I can think of would fall into the category of consumables, so let's allow a generous 100 quid for that.
That means I was being charged 1100 for a powerflush and straightforward boiler installation.
The only reason I got on my high horse at the beginning of this thread was due to being repeatedly told it was reasonable
I think given that I have had identical quotes from two very different suppliers, I am simply being offered the market rate for the area I live in.