engrosser

plural engrossers

1. One who copies a piece of writing in large, attractive characters.
2. One who takes the whole; a purchaser of such quantities in a market as to raise the price; a forestaller.

   if the engrossing be of all the commodity , and it be of general use , the price is at the will of the engrosser

   1691, [John Locke], Some Considerations of the Consequences of the Lowering of Interest, and Raising the Value of Money. […], London: […] Awnsham and John Churchill, […], published 1692, →OCLC