Looking closer at that Paris Galibier, it has incorrect brakes, what looks like a tandem chainset and appears to have been resprayed. That price is extremely optimistic.
Strangely, the seller admits that their knowledge of bikes is limited. I wonder if they are selling someone else's collection? They are unlikely to sell at those prices, especially if they are not in original condition and with original parts.
Looking closer at that Paris Galibier, it has incorrect brakes, what looks like a tandem chainset and appears to have been resprayed. That price is extremely optimistic.