You can take out probate yourself. Or you can hire a solicitor to do it for you. If only a revenue cert is required the solicitor should tell you this and charge only a minimal sum. Or again, you can do it yourselves by filling out the relevant tax form and sending it to the Revenue with the necessary proofs. Thing is, all of the above are fairly uncomplicated matters for a solicitor to deal with, but not easy for someone who doesnt have the relevant tax and legal knowledge. So either a bit of work for you to do yourselves or get a solicitor to do it for you, in which case obviously you have to pay.