I looked the prices up on AZ as I got the Burgol from there but haven't checked the Saphir in detail. Unfortunately I'm not aware of any B&M near me that carries stuff like this to compare prices side by side.The price difference is more than what I would have expected. After a quick search, in the NL (and DE as well), Burgol is 19.99 EUR while Saphir is 20.95 EUR. I remember buying the Saphir for 17 EUR a few years ago though, but that shop doesn't seem to carry it anymore.