An electric breast pump doesn't need to be on your list of "must-haves" before birth. If your baby is feeding directly at the breast, breastfeeding is going well, and there is no need to separate mother and baby, you can go a long time or even your entire breastfeeding journey without needing one.
You don't necessarily have to buy a pump "just in case". If you want to express milk occasionally later on, for example to have some flexibility or to prepare for returning to work, you can choose the option that best suits your needs at that time.