productive relative to the cost
producing or capable of producing an intended result or having a striking effect
able to accomplish a purpose; functioning effectively
works well as a means or remedy
exerting force or influence
the total spent for goods or services including money and time and labor
be priced at
the property of having material worth (often indicated by the amount of money something would bring if sold)
value measured by what must be given or done or undergone to obtain something
