My first micro was from Sir Clive.
ZX-81. Did build an external keyboard + case for it later on. Which had at least the same price as the computer
It was incredible to get a micro-computer affordable those days! Thanks again Sir Clive!
My first computer was a zx81 kit, to which I added a real keyboard, and 32k of memory. Still have it somewhere. I developed a Z80 assembler in Basic on it, also a Forth Interpreter. This could have got me into my software development career.
My wife won a Spectrum in a crossword competition in an Astrology magazine, The third one worked and ended up with a microdrive and printer interface.