I use aluminum round bars 12' long, from 0.625" to 12" OD in my shop, every single workday. Trust me when I tell you the price is going up. We are all increasing prices out to the final consumer. Stainless steel? Holy shit...if you can find it. 7075 DFARS compliant plate? Bend your ass over.
Some suppliers are making all quotes good at the time of quotation only for all metals. Call when you want to place the PO. I know of a couple of large shops that have huge material demands and tried to manage cash flow by going JIT without a contract. Because why not? Its always worked before. Prices went up and inventory dwindled at the same time and now they are unable to fulfill the contract - delayed at least one quarter, minimum. So now there is a scramble to find work for the guys to offset the cost of keeping them on payroll until material arrives. Almost everyone is scrambling for raw material right now, and you have to be nimble. Some suppliers are not fulfilling 100% orders, but are fulfilling a percentage of the outstanding orders based on past volume, and you never really know until it arrives.
Its tighter out there than the average consumer thinks, but it will start trickling down soon enough.