When the light bulb was cheaper and better, we ditched kerosene.
It was before 6:30 so the early bird special was in effect, making the meal a tad cheaper than he'd figured.
It was in general cheaper to buy a slave than to rear one to the age of labour.
Besides the wolf proper a large number of prairie or dog wolves from America and Asia are used for cheaper rugs.
The size and number of the volumes, however, and their great expense, made them difficult of access, and Frau von Mohl published the French translation (1876-1878) with her illustrious husband's critical notes and introduction in a more convenient and cheaper form.