Well, remember when you are talking about a print, you could be talking about a lot of things - but selling for a lot you are probably talking about a very small run hand created print created from an engraving - printed and numbered by the artist with the engraving it was printed from then destroyed (or lost) and sometimes with the other prints also lost. You probably aren’t talking about a screenprint with a run in the thousands or the print you get from the museum gift shop.
Engraving or lithograph - the last was very popular with painters, because they prepare the image by using brushes and pencils, very much like you would a painting or drawing. Except they “paint” on a highly polished stone. Through a process of dark alchemy, the stone is made to absorb ink where the artist painted and prints are made by pressing paper on to the stone.
However, a stone is good for perhaps 200 prints of sufficient quality. After the print run, it is wiped down and polished up for the next motive.
All of which means that artist lithographies are always limited in number.