A little party trick -- depending on the printer, you might be able to get an "in line" power tap/Y splitter for the power cord to run the Pi and the printer off the same outlet. (My printer takes a normal C14, so I just split and slapped a USB brick on the other end.)
https://www.balena.io/blog//wifi-enable-usb-printers-with-a-...
Definitely made it ambiguous for me, at first glance.