Definitely, Pina, expensive is totally based on what you are willing to pay (as collectible is based on whether there is a collector out there!)
Phamel, nice Kenmore. Are you one of those/us who tries to track where the machine came from, or do you like it just for what it is? I do both myself, sometimes I like to know the history of a machine, sometimes I just like the aesthetics and how it works or looks.
I think Sears machines were made mostly by White for many years, but I don't know when the Kenmore branding came into play. Janome makes Kenmores now, but Janome did not exist in the 1950s. Janome came from New Home, which did exist back then, but had some financial difficulties and may have disappeared for a while? I'm not totally sure about this. I think there was a period of time maybe in the 1950s when New Home went away, and White was in question, as home sewing was sort of questionable, and I'm not sure who was making Sears machines. Somewhere in there Kenmore became a brand, and I've never really gotten the timeline straight. Kind of interesting how the companies managed to keep it all going and sort it out to get where they are today!
Interesting tidbit (perhaps only to me, but so be it). Back in the 20s, I've read, Sears produced a line of machines that were literal duplicates of the Singers of the time. Even labeled them Singer. There was quite a trademark war, primarily because Sears was undercutting the price with their "Singer" versus the real one. I bet there is a movie class story there! (well, ok, maybe only we might go, but still...) K