I'm about to do a new run of both the Atom RGB Colour board, and a new enhanced version of the RAM-ROM board, the new version in addition to having 32K or RAM and a built in ROMbox, has the noise killer circuit provided by Kees, which allows the Atom to run at 1.7MHz, but without any interference between the screen and the CPU access to the memory.
Before I do the run I'd like to try and work out what the demand is so if you are interested in either board either reply to this thread or send me a PM letting me know you are interested.
AtomColour was about £25 last time, may be slightly more this time as the cost of the colour encoder went up

The RAM-ROM-Noiskiller will be somewhere around the £25-£30 range.
Shipping will of course need to be added to those prices.
Cheers.
Phill.