Quote from above:
To convert you need: (Pass ATPL EXAMS)
CPL (determined by your European Schoo, but in my case was 5 hours)
IFR/ME (and Class ME Rating) 15 hours (which 10 on sim and 5 real flight).
And checkrides for both and license emission fees.
So add 8000 euros aprox at todays date to convert everything from FAA to EASA.
How old is your info? Because I did something similar recently, even applied for exemptions with the UK CAA and I spent way more time and money than that :P Note that I only had 200 hours so I did not qualify for the easy path when you have 500 or 1500+ hours.
For example, The ATPL exams alone would be 4000€, as you have to go through a distance learning course before you can even sit the exams. The CPL and IR skills tests still cost 800£ each or something in that region. We haven't done any flying yet and we're already above 5500€ in course and exam fees!