see this photo of it here
http://www.abpic.co.uk/photo/1095723/
It only had a permit in 94/95 expiring in Aug 95,it was imported from the USA. I remember it sitting outside at Tatenhill derelict as in the above photo, for quite a few years, I dont know where it went after that.
I wouldnt think it was worth anything. If someone gave it to you, I would seriously consider whether it was worth spending any money on it. First step if you want to buy it would be to get an experienced LAA inspector to look at it. If you really want a Tri Q over anything else, I would have thought you would be better starting from scratch!
There are a couple of Quickies still with permits to fly, but most that have flown in the UK are no longer flying, most seem to have had landing or take-off accidents.
I will always remember the multiple landing attempts by someone in a tri-q at a PFA Rally at Cranfield in the 90s. I think he made 3 approaches, and each time there were at least 3 touchdown attempts on the long runway. Eventually the nosegear gave way and the aircraft slid along the runway fuel spilling out catching fire when it came to a halt. Luckily the fire was put out straight away and the pilot got out I think without injury. Im sure this was more the pilots fault than the aircraft!
On paper the Quickie seems a great aircraft, it would seem that in practice it isnt so great!
However Im sure there are a few people who have flown them a lot and never had a problem.