Is there any way to try out a breast pump?

Yes: Borrow from a friend or rent one for a short period of time.

Yes: Sure! you can rent one from most hospitals that deliver babies. Just call the lactation consultant at your nearby hospital and they will usually be able to get you a hospital-grade pump. You will need to purchase your own sterile equipment that will be used only for your baby. They are usually able to provide this for you to purchase as well.