Sure, we recently bought 2 frozen dinners of the healthy wok type, to make me less stressed on the days when we have very little time to make dinner and I am the first to come home. Until now we have only eaten instant meals maybe a handful times a year. I intend to do it a little more often, maybe twice a month. Funny, because everybody else here thinks they should make home made meals more often.
I also still buy (cheap) books at Amazon, instead of going to the library. As a child I have read many library books and I have learned to dislike the short time to deliver it back. I want to be able to read a book in my own tempo without needing to watch the time to deliver it back. But still, buying cheap books at Amazon costs less than buying a paperback in Norway. So I do save money, compared to what I did in the past, many years ago.