Welcome to both Signet & Twitch ..
Generally, if it's a one-off menu, or a demo circulated only between members of a particular group, then (a la eBay) .. it's classed as "RARE! Never Seen Before! One Time Offer!" etc. etc.
The standard stuff such as the Automation / Pompey etc. disks are complete (but SHW/Dbug might be interested if you got different menu contents to the ones he's got for Automation).
Check out the Floppyshop lists (they're elsewhere in this forum) and if you've got demo's not on there, then it's probably a certifiable rare one.
There's more than enough bods on here with enough of an ST set-up to image up the disks and get them transferred.
My main site: http://www.mug-uk.co.uk
- slowly digging up the bits from my past (and re-working a few): Atari ST, Sega 8-bit (game hacks) and NDS (Music ripping guide).
I develop a free Word (for Windows) add-in that's available for Word 2007 upwards. It's a fix-it toolbox that will allow power Word users to fix document errors. You can find it at: http://www.mikestoolbox.co.uk