Buy one of the Camera/Camcorder magazines - compare prices of various bucket shops which still offer a warranty. Beware any internet sites selling clone imitations from China/Korea which are crap and NTSC products from USA which will not work in Europe.
So called Grey imports are OK and covered by manufacturers warranty.
One of the worst places to buy anything is Dixons Duty Free....stock is dated and at best you will only get 17.5% discount which is only the VAT