I got mine in 1975 for $11.25 from REI. I've never had an issue with it, including well below zero. Put enough white gas in the "spirit cup" to prime and you'll never have a problem lighting it. Mine is the original model, not the "R" model with the self-cleaning apparatus that was introduced some time around the late 70's, early 80's. Those reputedly can be a bit more problematic. Regardless, if you keep the burner clean they'll give a life of service.

https://en.wikipedia.org/wiki/Svea_123

“Perfection is Achieved Not When There Is Nothing More to Add, But When There Is Nothing Left to Take Away” Antoine de Saint-Exupery