I noticed the intake prices skyrocketing way before covid or Biden. They just keep bumping prices and as long as sales dont slump suddenly they continue to bump the price up. I saw this happen with 70-71 340 air cleaners and exhaust manifolds. Someone sells a nicer than average set for a higher than average price then suddenly that is what everyone thinks all of them are worth. The next guy sells his for $50 more and so on.
I literally saw this trend with the air cleaners so I bought one to have as a spare. I paid $225 for it. Within a couple months the price was double. It all stems from greed. Now I wont sell mine for below average market but its not because of greed. I know if I want another it will probably cost me double so I would rather hold on to it.