Hi Billy Mac
In past posts people suggested their own favorite pumps. Some of them, such as the "Ericaid" are quite expensive and depend a lot on Medicare and insurance to pay the several hundred dollar price tag.
I opted to buy an inexpensive model that I bought online for about $70. As far as I can see it works just like any of the other "manuel" pumps. There are electric pumps, but I think they are intended for men whose hands are too weak to use the manuel model.
My discount model works fine.