https://www.theverge.com/2021/12/3/22813872/amazon-profit-small-business-fees-sellers-prime

Sellers who ship through Amazon will see a new 5% fuel and inflation surcharge - NPR

This stinks.  I am still trying to get make sure this means 5% on referral fees, not 5% on sales. That would be outrageous and mean I'd have to would have to jack up prices by about 12% to be at the same level of profits.

This is less of a big deal than I feared.  It is a 5% increase on fulfillment charges.  In my case it will raise the fees from $2.92 to $3.07.

2022 US FBA fulfillment fee changes - Amazon Seller Central
https://sellercentral.amazon.com/gp/help/external/GABBX6GZPA8MSZGW?language=en_US