Free: Contests & Raffles.
Not sure about price, but 3 Forks in Cle Elum has a lot of reloading supplies, plus I would much rather head east then west
you could make a nice road trip starting by coming down hwy 18 1st hitting sportsmans warehouse in federal way, going south on I5 to sportco in fife. South on I5 to Welchers in Tacoma. East on 512 to sportsmans in puyallup, then back home.
I have a little stash of different powders if there is something you wanted to try and I have it I can kick you some for a load development.