A chap in Florida has a Factory built Pitts S-1 (C I think) going cheap
Don't forget that you will have to add shipping in a container, VAT and insurance as well as packing, reassembly and inspection/registration fees. It might end up cheaper buying one in Europe.
I would also say that homebuilt rules in the US are laxer than the UK (not sure about Ireland) so there may be costs involved in getting it up to the required standard.
It may be a bargain, but check it thoroughly, there's probably a reason why it hasn't been snapped up by someone in the US.
ZA