Posting this here as I have no clue whatsoever what this is worth. It's a ZX Spectrum 48K with several cables and mains adapter in its original box with original styrofoam inserts. No manual / printed material at all. The unit and mains adapter look exceptional, almost as if they were bought yesterday. I have never used it (just to verify whether it works), and from the looks of it the original owner hardly did, too. Picture is attached. I should've used a better pen for writing my forum name, I hope it's still legible.
Lol, surely it's not worth 70 quid!! You still see these from time-to-time at boot fairs. I passed on one for 20 quid, boxed. In fact, I picked up a loose 128 for a fiver. The box looks a bit tatty, really. MINE looks like new... because I bought it new, and put it in the attic, where it remains nearly 30 years later! Although mine is the Plus model. And the manuals would affect the value. You can often pick them up cheap enough. I saw some in a charity shop recently!