I have ordered uncrushed Marris Otter from the Homebrew Company in the past, although it had to be ordered ex stock. It was the same price as crushed grain (39.99 for 25kg at the moment). So your pricing seems to be comparable to theirs. It's not a game changer but more suppliers offering a wider range of uncrushed grain would be good for the Irish homebrewer, especially if it's a standard stock item.
Without knowing what mills you propose to supply the prices are out of line with what people can currently source. Crankandstein are good mills (2A mill would be most popular and perfectly good for most homebrewers, can be ordered with or without base & hopper - from $96)- if you order a few you will save on shipping and this saving can be passed on. This reduces the entry price and will get you more customers for uncrushed grain.
Best of luck.