I have recently listed on SellMyRetro my ZX80 clone kit that is untouched and still in as-bought state. It does not include the power adapter nor the case for it, just the board and all components.
https://www.sellmyretro.com/offer/details/47959
Mike
ZX80 computer kit for sale
ZX80 computer kit for sale
TS 1000 bought in 1982 and brought back to life by Sir Ian