When I started the thread "Bargains on eBay?" (and the interrogative punctuation is important), it was to discuss the (then) sale of a Leak 'Troughline' tuner, which being a vintage item of audio gear Past Masters was the correct place to put it.
Since then 'Bargains on eBay?' has taken on a life of its own; being one of the most popular and contributed to threads on AoS (along with 'Spinning Today ... '), so whilst discussion often concerns more current items of gear up for sale, the thread itself hasn't been moved, for the simple reason that vintage items still appear for sale.