Good luck with your hunt Sam.
Like you, I came from having a few GT-4s and MR2 turbos (along with many other 'interesting cars' on the way).
I had been wanting a Supra for about 20 years and finally got one imported 6 months ago. They really are very special cars and draw a lot of positive looks and comments.
Hope you find a good one, its worth the wait to get something you know is decent.
I had a few 'issues' with mine after it arrived but all was resolved fairly quickly and its running smooth and sweet now.
Great cars, with a great following.
If I were to sell mine (and its an auto) I would be looking for around £16k for it. Strong money yes, but its a great low mileage car and priced so I keep it :-)
Buy one soon if you can, as the general consensus is prices will keep going one way. Up.