Apparently it takes bottled ink. You can get Parker Quink bottled ink for 8.99 at officedepot.com. Also Sanford Higgins eternal ink black (and other colors) is 2.49 at madisonartshop.com.
I think what Omar is wondering is whether this has a built in reservoir for ink or and a plunger to fill the pen or do you use it by dipping the point in a bottle every few words as you write? The picture does not show it but is there a lever on the side or is it just a holder for a pen nib?
Oh, thanks for the clarification. Yes, the pen has a built in reservoir for ink and plunger to fill the pen. You dip the pen in the ink and twist the ink reservoir. It then fills, and you put the pen back together.