Books is a good indicator. We have about 100k+ listings at any given point. We have seen at least 50% of our competitors go out of business since the last rate hike (mid summer).

...you are now paying about $3 more per book and the majority of that now goes to Amazon. Not the third party seller. They raised % taken and also began taking a percentage of shipping fee which is why you see a bunch of third party sellers listing free shipping. Basically they caught up to Ebay in that regard.

"Used" books are not really profitable to sell on Amazon anymore. If you want better prices go to Abebooks.com. Same sellers and generally $2-3 cheaper now.