Most of the examples you show are what I’d consider to be classic “dressy” or more formal sgians, with elaborate carving, silver mounts with some type of stone — more wearable art than practical tool. And if you’re looking for “the real deal” in this type of sgian, it will likely be an antique or something contemporary made by a highly skilled maker creating specialty items, the scarcity of which allows them to charge a premium for their work. Basically, it’s supply and demand. A McLaren supercar costs more than a Toyota Camry.
That said, I think a Camry is far more practical, and a typical “day” sgian would likely get a lot more use than something more suited for formal dress occasions. The sgian I carry least is the fanciest of my small collection:

Personally, I prefer a proper high carbon blade and more simple handle as I prefer a knife to be more functional than decorative. On the rare formal occasion, I’ll carry the silver mounted option (which also has a high carbon blade! 🙂)
Personal preference, utility and budget are all a factor.
Cheers,
SM
Shaun Maxwell
Vice President & Texas Commissioner
Clan Maxwell Society
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