Is a manual breast pump worth buying if I already have an electric pump?

Across the reviewers we read, the strong consensus is yes, as a backup. Specialist subreddit threads on r/breastfeeding and r/ExclusivelyPumping repeatedly describe manual pumps as essential for power outages, travel, clogged ducts, and emergency relief, and at $13 to $30 the downside is small. Many parents also use a silicone pump on the opposite breast during nursing to catch let-down that would otherwise be lost.