Be carfull when you think:
Agriturismo= cheap and high quality resturant/accomodation
sometimes, expecially in Tuscany are really expensive.
Few years ago a new law here in Italy give the possibility to get money and to pay less taxes if you rebuild an old farm house in the countryside and then you open inside a resturant/accomodation.
To be called Agriturismo you have to use in your resturant at least 40% of prouducts who come from your own productions (ie. milk, eggs, pasta, vegetable, meat....)