Most I have ever paid for a pound of powder is $59, two weeks ago for RL-26... I bought ten pounds last week, Ramshot Hunter and Magnum @ $53.50/pound and W748 @ $55.36/pound. I have enough now to ride out the silly spike we are currently experiencing... of course prices are going up, but there will be some market correction, supply and demand still rule.
Primers were going average over 100.00 per thousand. Those were old federal and remington as well. Are they any good? Likely for the gopher patch. I would not want to bet my life on it for a match load.
Primers will be totally fine if kept dry.
I'm shooting reloads with vintage Winchester Western Staynless primers and no problems at all.