There's no such thing as a 9mm Desert Eagle.
@ 1USD a round. @.50 cents a round
Desert Eagle specifically, no. The Jericho - also commonly called the "Baby Eagle" - is something of a scaled-down version of the Desert Eagle, and that is available in 9mm.
A single 9mm bullet is about 3-6 cents. A 9mm Parabellum (Luger) CARTRIDGE is about .30-.55.
The Desert Eagle was never made in 9mm. If you're referring to the Jericho, aka, the "Baby Eagle", 500 - 900, depending on condition, accessories, and whether it's the straightforward 9mm or the convertible Jericho 941, which can also fire the .41 Action Express.
50-1000 usd
Between $600 - $700, new in box.
100-260 or so
25-100 or so
25-100 or so
50-300 USD or so
Depends on which powder, and which loading of the 9mm.