The solicitor handling my mother's estate which was around € 600,000 charged € 1,500 + VAT + sundries = € 2,500. However she also got to handle my father's probate (it wasn't done when he died 4 years earlier) and the sale of the house to one of my brothers. Total charges were €5,000.
I did a some of the preparatory work (getting bank statements, valuations, income tax returns to revenue, etc) which involved some time on my part but wasn't difficult or complex.
I don't think the absence of a will justifies the 3% cost - try a different solicitor.