No, I bid £1700 in the hopes that would top any other bid. I kind of knew nobody would go that high. Realistically, I think its level is about £1200 hammer. So that seems a fair price to pay (plus juice). They don't crop up very often, and I missed out once before. Also, the F8 is slightly scarcer than the F9. Hence that one went for less.
I know what you mean though, Jon. I once did bid for one at LCA that oddly went for the exact amount I bid for it.