Combi Boilers on Belgium

Does anyone have experience of buying a combi boiler in Belgium. I am interested in a make called Remeha which is manufactured in Holland but widely used in the UK and Belgium. I have been on the Belgium website and followed some links but the price I am getting back is nearly double that of the UK and Holland. But I am told that warranty with not be valid if I purchase from either of these countries but install in Belgium. So if someone has experience of a place with good prices then that is a must ! TIA Paul.