Greyhound bus would probably be your best bet but even so, did some down and dirty guesswork on the zips and size and weights, shipping around $172 to Olympia:
https://shipbybus.com/shipgreyhound/...elect-service/
Not sure what the other places like FedEx, UPS or the post office would charge. Not sure if the PO even ships stuff like this, never saw any while I worked there.