I don't own one myself, but became very good friends with a
family sailing down the Thorny Path this past season who owns one. We asked specifically about the fly-bridge design and the answer was surprising - they said they loved it - it obviously gives a great view when
docking as you can see all four corners of the
boat. But at sea, they didn't have a bad thing to say about it either, even to the point that you don't get much more soaked during a rain storm than on any other design. They have the standard
bimini top over the
cockpit and I never heard them complain about it being uncomfortably hot - but really, under sail, the breezes should keep the temps down as long as you can duck under the
bimini. But the only thing of note is that on night passages everybody had to at all times wear their life jackets because you have to climb outside the comforts of the outside
saloon area to go up to the
cockpit. But the other benefits of the 440 (over a
boat like ours - a Venezia 42) is their payload was way more than ours - that boat can just be loaded down because the hulls are so much wider. All in all, we were impressed with their 440 and I can't see how anybody would be disappointed with the performance or the comforts of that boat either at sea or at
anchor. I do know how much they bought it for, but its not my place on this forum to reprint that information.
But the best thing to do to get an idea of sales prices is call a
broker - I like the guys at Multihullcompany - and they should be able to give you an idea about recent sales prices on any type of boat.