But If a go to imparts knowledge and produce excellent periods to people today, it is worthy of paying, even it takes time and expense. paying - for which money is compensated; "a paying job"; "remunerative function"; "salaried work"; "stipendiary products and services" Exactly what is the expense of PG https://maps.app.goo.gl/DfJuWpGcbKKT44ne7