Hope you don't mind my spamming this thread.
If you want a Spectrum... well.... a picture speaks a thousand words (that was my current Speccy stock a few weeks back, have a few more now).
I'm a bit more expensive than eBay but my Spectrums are guaranteed for a month, and they're tested and refurbished where necessary (capacitors changed, all that), modified for composite video if you want (much better picture quality), the membranes work, they're not missing the little rubber feet, the CPU is tested with a Multiface (many CPUs are faulty and appear perfect until you connect a Multiface or Interface 1), all that stuff. Obviously power pack, manuals, leads and demonstration tape are also tested.
Basically, you get a Spectrum as close to as it was when it was new as I can get it.
Prices start from £40 for a well-worn box, reasonable Spectrum 48K, up to £150 for the really smart ones. +2s start at £60 boxed, I have a +3 for £70, 128K toastracks start at £100.
I also have (tested) cassette decks, and I can do a deal if you buy games at the same time (over 500 different games in stock at the moment).
That's enough spam for now.
Let me know if I can help!
(Oh, I'm also more than willing to help you get it all set up if you need assistance)
Edit: Forgot to mention those prices include 1st class recorded delivery inside the UK and VAT.