Can Anyone helps me to buy Dell Optiplex 780 SFF :Ram 4 GB & HDD 500 GB ?

I need Dell Optilex 780 SFF with 4 GB Ram and 500 GB of HDD.
I really need about 100 pcs or 200 pcs.
If you can let me know the prize of each quantity with 17″ Monitor.
Hope you will help me in my research.
Thank you,