I call this the Lawyer's answer, because 9 out of 10 times it is what my response is to a question.
"It depends".
It is all relative, so it does depend on the situation - are the families of the deceased in agreement; is there a greedy in-law; who lives where, etc. There's two dimensions. Drafting the paperwork (will, trust, etc.) you would need for probate, and the actual probate administration (getting someone named personal representative, liquidating assets perhaps, explaining how to operate an estate account, etc.)
This office is looking to assist with the active probate administration; small or large. Sometimes, e.g. you do a voluntary administration (deceased has no money, wife has no children). Sometimes you need a formal probate filing (possible contest, relatives at odds, etc.)
As I said, it depends. It all starts with the free consultation. And also, you may need to start with that will, Power of Attorney, or whatever.