Some solicitors/law firms — especially if they do a fair bit of business with your employer? — get big-hearted once a year and offer a "pro bono" gesture whereby they'll waive fees and let employees/members of a C.U./political party cumann/farming co-op, etc., etc. draw up a standard will for a €20 or €30 donation to a designated charity. Makes 'em look like human beings, and — I'm quite sure — pays off for them in the long term, in terms of repeat business...
I made mine this way, a few years back. You'd need to know in advance exactly what you want, have details of (and consent from) prospective trustees/executor/guardians.
You can draw up a perfectly valid, legal will without paying a solicitor a cent, but it's usually worth paying a few bob for the advice/sense of "security"...
Dr. M.