“The bog-standard Pi Zewo W is cheaper, but this comes with a presoldered header connector, essential if you want to "break out" and connect HATs or other external devices.
If you are not a confident solderer, (or neither have a soldering equipment, or the time to do it yourself) the extra couple of quid is well worth it.
It's a slight shame the other headers (reset, and composite video) are not also included, but this would cost more, and be of limited use for most users.”