I got my No8 from Highwood Classic arms and I love it. he has one for sale at the moment and I would also check out Peter Starley at Black Powder I think he has at least one in stock.
It is difficult to find a good un-molested one but these guys are very helpfull although Im not sure if they get involved with exporting.

Price wise anywhere between £700 - £1300 depending greatly on condition. The one I got looked like it had just rolled off the production line and shoots as good as it looks.

I need a PH5D for mine but when they come up on evilbay they go for silly money.

Happy Hunting Campers