Every year, like clockwork, the carriers ALL raise their rates, which is very frustrating for online sellers. If you ship through UPS, here's the increases UPS has announced for winter 2022:

The increases shown below are for USA to USA shipments.  (If you are looking for international shipment rate increases, check out the article on UPS.com)

In the image below, look at the column on the right, labeled October 2022 - Jan 2023.  MASSIVE INCREASE!