pumping can be very expensive, because there are consumables that have to be changed every 2-3 days. These parts can cost 2x to 3x the cost of syringes or pens. I do not know what you get billed for because I have no idea about health care costs in South Africa. IN the States, it all depends very much on individual medical and prescription insurance.
The pump uses only fast acting insulin, so the costs of insulin should not change.
the pump is a programmable syringe. that’s the best way to describe it. The pump requires more finger sticks, more button pushing, and more “hands on” interaction than syringes, because there is a higher incidence of site infection and DKA when on the pump compared to most multiple daily injection (MDI) plans.
that being said, pumping can be better for control because it more closely matches what your body needs than injections.