Hi IO540,
I believe you may be thinking of a FAA IR checkride being conducted over here in the UK.
As far as I can tell (from the thread starter saying "exams" nearly finished) I believe that they are talking about the JAA IR course.
The CAA flight test fee can be found on the following link (pdf document):
http://www.caa.co.uk/docs/175/srg_fc...ges_ppl_05.pdf
(The fee is currently £637 for the initial attempt and if a partial is obtained a further £426 is payable for the re-test - these are payable directly to the CAA).
Best wishes,
Charlie Zulu.