I went to BH yesterday with FE.
The first thing they mentioned in the Rider Briefing was their tyre sales chap and the photoman and suspension man...
I saw they were selling used slicks for about £35 a pop...I thought that would be a good deal if you just fancied trying slicks to see what they are like. I can't vouch for the condition but they looked well worn*.
BTW - had a great time, warm and sunny and no mishaps! My araldite and bacofoil repair held out a treat too!
*no tread left!!