The Retro market is big!
Quite a bit of our sales are 20-35 year old BBC/RISC OS etc kit. Just sold yesterday a BBC micro with no disc interface! I'm on the lookout for old network hubs with 10b2 (BNC) and RJ45. Network intetfaces for some early RISC OS kit are now rare but I have some old but unused 10base2 interfaces that could be used if I can track down some suitable hubs to allow connection to a modern network.