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Cost of a 128KB computer with floppies in 1985
(sopuli.xyz)
This is a most excellent place for technology news and articles.
I do, wonderful machine. You could get a 16K RAM pack (most did) that made a huge difference. Problem is, if an ant sneezed in the next town over it'd wobble loose and the machine would crash. A dab of Blu-Tac was just the ticket.
The ZX Spectrum came out 2 years later and was far more capable, and reasonably priced.