Capacitor hunting

Hi all,

I am baffled at finding a capacitor.

I am setting up to run a few (3) NEMA23 steppers, 5v/1.5 A and
6.5V/0.85A at between 70 and 80 VDC.

I was figuring a 10,000 uF at 100 VDC but the places near me don't
carry these values. At least the places I've looked.

can someone steer me in the right direction ?

(and if you say Wal-Mart, I'll kick myself casue I didn't even try
there)

Dave