£729! They have got to be bloody joking.
An insulated flue will easily be the same again, too.
How does it balance against what a boiler might cost?
I personally wouldn't be without a woodburner, I'd rather have one than a telly. Having said that, living with no other heating it was a bit of a faff. Manageable, because I didn't have a job at the time. I had to buy wood in, so it was much more expensive than electric would have been but at least I knew what the costs were beforehand.
if you are outside a smoke control area the price of woodburners reduces dramatically .
flue costs very much depend on where it goes in the premises and how it is vented.ie an insulated double skin is costly but a simple pipe with a couple of swept bends and a rodding point is fairly affordable, in any case it needs to be safe so will involve some costs .