Trek Madone SL5.2 OLCV Carbon Discovery Channel Edition: Sell, keep, value, desirable?

Hi all -
Just found out (albeit early days) that we're about to add nano to mini and micro so some bikes and bits to clear out for space, primarily but also some buggy and breast pump (and the likes) fund.
My wife has a 2007 (I think) Trek Madone SL5.2 OCLV carbon frameset in Discovery Channel colour way and I'm after a bit of info into its desirability and value; if they are desirable and fetch decent/fair money I'll likely sell, especially if someones going to make it period correct with a DA 10sp groupset they have gathering dust and have been waiting for one of these to pop up. I'll get some pics up later (if I can as struggling to upload pics) but it's in good condition for age (obviously a few marks and chips) and is 54 with bontrager finishing kit inc carbon seat post. If it's waaaay cooler than it's financial worth I'll definitely keep it, stick it in the loft to build up in 5 years time or whenever but if they're very popular i'll likely look to move on. Here's a screenshot of the model (not my actual frame)

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here it is - a few light nicks and stone chips as you'd expect but it's in very decent cosmetic and aesthetic order with vibrant paintwork, with the exception of the front fork rub which is down to the carbon as pictured(it's been ridden plenty exactly like this)

to save me asking £1m reasonable offers considered, any idea on what would be a fair price on here? Comes with Cane Creek headset, 6700 BB installed (both nice and sound) and Bontrager race light carbon seat post also as well as slightly tatty Bontrager alloy bars/stem and perfectly decent outer cables already to size

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