I also bought a Rangemaster from trading post applicances.
Great price and delivery in 2 weeks.
Otherwise Knowles in Dun Loughaire stock them and DID Electrical do some of the rangemaster range.
We recently bought from Hardys in Kilkeel- way cheaper than anywhere in the Republic -I mean way way cheaper!! Ask for Conor Hardy he is a gentleman to do business with and will deliver anywhere in Ireland