I wonder with some if it’s an effect of the Gumtree knuckle dragging buyers. I recently sold a Yamaha bass for a truly bargainous price of £100, I put it up at £110 ovno making it obvious that I wanted £100..... or so I thought. I had quite a few idiots offering £40-60. Bear in mind it was the only one below £150 as it was. Eventually a bloke offered sensible money and picked up the same day, it could not have gone to a better guy. But it makes me think that some stuff I see overpriced is maybe building in the idiot factor, I want £100so put it up at £200 and when they offer half that you are there.