An update on this.....
I can get the combined reamer/open eye needle insertion tools, the tube manufacturers will do small volume orders for me and I can get as many rat tails and tubes of vulcanising glue as I need....but the supplier of the needle/reamer will only do them in a minimum order quantity of 5000 units

I'd love to be able to go ahead, 'cos I do think these would be good kits, but I'm afraid I'm unable to afford the MOQ of 5k units, especially as I might only sell couple of hundred here at most.
So, for the time being, I won't be going ahead with this project- very sorry, and thanks for the interest
It does, however, leave me holding a large number of Rat-tails and tubes of glue that I'd already sourced.......I've got all I need on board the Moto Morocco Support vehicles and bikes, so you guys might as well have the rest if you want them.......
They are compatible with the standard issue BMW needle insertion tool BTW.......it's just a matter of following the instructions I posted earlier in this thread.
You don't actually need the vulcanising glue either (not something I ought to be saying in a thread where I'm trying to sell stuff I guess

) as the rat tails are quite 'gummy' anyway- the glue just 'makes sure' and also , it does help in getting the sticky rat tails into the carcass of the tyre.
So....here we go.....I've got several hundred of these, so how does a fiver for 5 sheets sound?
There are five rat tails per sheet, so that's 25 repairs for a fiver
I've got about 40 tubes of the pukka vulcanised glue as well....these are the big tubes, 50g size so one of those ought to see out all of those 25 rat tails.
I've no idea how to send the glue out safely though, so Unless anyone has any brilliant ideas, I'll keep thinking on that one.
Please say here if you want some rat tails and then PM me for my address.....
I can take paypal if you like, or send me a £5 note in an envelope and stick in a small, pre-addressed jiffy bag and I'll pop them in the post by return