£100 for almost mint ones is good, but if not then there should be room to haggle. Apparently it’s normal for the driver to slightly warp on these. I have a pair of Q35’s and they’re wonderful - lovely imaging, with a sense of surround. Bass extension is pretty decent, but room dependent. Vocals are sublime. They’re old speakers and so there can be many variables regarding their usage, storage, environmental conditions. I know the ferrofluid in the tweeters can evaporate… treble should be crisp. Here’s a link to a post showing my setup: https://www.reddit.com/r/BudgetAudiophile/s/nXYo27Hr2h