Question

Think of other examples where collective provision of goods and services is cheaper than individual provision.

Answer 1

in factories ., in mining , in manufacturing etc
where an activity is carried out on mass scale ....

Answer 2

Other examples are in factories and in mining where goods and other products are produced on a large scale. In factories products are produced in a bulk, in mining areas also goods are produced on a large scale. So, few merchants prefer to sell their products in bulk and these merchants don’t want any kind of mediator in their business. They want only customers who should come directly to them and buy products from them so in this case both buyers and sellers are benefited.