My reason for not using a solicitor has never been to save money. I have just always considered it not necessary. Of course, if one is not confident, has any doubts in their ability to get it right, or language problems, as Baz says, I too would usually recommend using a solicitor.
Nothing to do about saving money, more to do with not knowing fully the legal side of house purchase in Spain, and having 3 houses in Spain you would have thought I would know, but I am not to big to admit I don't know.
I have tons of ability to get things right, in my own world of business, never have been one that professed to know everything about everything, prefer to leave that to the correct persons chosen profession.
I have no Language problems either, so thats not the problem, thanks to Grannie being Spanish and making us six speak only Spanish with and to her.
Just find it a bit weird when things go wrong, in lets say a house purchase, and you get asked did you take professional advice.......'What you didn't...So what do you expect then' and as the housing market in Spain is, to say the least a little different, to perhaps the home country, could be a little money well spent, of course some don't get these problems which get reported on here all the time...Maybe the one's that have got bad advice.
Just my view on it, others tend to differ, which is good.