I may have had a stick blender, Margo....if I hadn't used it for something in the garden......but having tasted the soup made by a friend in her soup maker.....and fancied the chuck it in and get great soup method I bought one..... good aren't they........ :-)
We always said we'd never have a dishwasher. We were adamant - just how long does it take to wash up anyway?
Then we had a self catering holiday with a dishwasher. Within a week of being home a dishwasher was installed and now we wouldn't want to do without one
Using less liquid, I guess, Eccles. Also, using less potato. I used to put in lots of potato, to thicken it. I don't need to do that with the soup maker.
I think you can compare a soup maker to a toaster. You can make soup and toast without them but it's a lot easier.
Nobody thinks of a toaster as a luxury these days