It’s a battered frame with a corroded fork and cheap wheels – it’s not worth much!
It needs a shifter, cos it’s bust, and a mech, cos it’s bent. Other things are all consumables.
One of the reasons for replacing the drivetrain is that I’d like to get a 1:1ish cable pull. I think that 10-speed 105 has this and is the cheapest option. I’d need a cassette, chain and shifter, which I’ve found new for £110. Not looked on ebay yet.
I’m already looking at cheap cassettes and chains, but not seeing Tiagra or Sora shifters for significantly less.