I'm just not riding these days, so thinking of selling my 2016 Mega.
It's the "Comp" Spec http://nukeproof.com/products/mega-275-comp-2016/ in large with the following changes:
[list]
[*]Black and Yellow frame, rather than Black and White (i.e. Team frame colour)[/*]
[*]Nukeproof generator 650b wheels
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[*]Formula "The One" brakes
[/*]
[*]Formula floating rotors (180 mm)
[/*]
[*]800 mm Warhead bars
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[*]ODI Grips[/*]
[/list]
There's a tiny amount of usage damage, but it's in pretty good nick, as it's just not been used that much.
Think it's really hard to put a price on 2nd hand mountain bikes. I've got my FS up for sale on multiple sites (eBay / gumtree / here / pink bike / bike radar etc), but only for about a week so far. Got 10 people watching it on eBay - but no calls/messages yet. Difficult to know if priced well or not - seems cheap to me but ho hum.
It seems that bikes loose 50% of the new price after a year. Then condition comes into it. So probably around the £1200 mark is my guess. You could get more or less who knows.
Only thing that isn't current on that is that it's non-boost - so maybe 60-65% of the (most discounted) new price depending on how little use it's had. I think once you start looking for over £1500 for a second-hand bike, regardless of spec, people start thinking about buying new instead.