I think its a really good idea to get some idea of what others have heard or seen of a course - and not necessarily go from whatever testimonials are on the various websites. There are a lot of 'companies' offering courses and it doesn't take much to set up a company.
Courses tend to vary in costs and I'm not saying high cost necessarily equal high value. However - most courses seem to have a basic entry level of cost and its going to require your time away to participate - so very important you find the right course provided by the right people for the right price.
Unfortunately I don't know much about Ireland based course providers. I would follow up on Johns suggestion
Dryad bushcraft is also based in Wales - so just a hoppity skip across the water
https://www.dryadbushcraft.co.uk/
That all said I'm sure there must be a reputable school in Ireland.