Rare? Yes. But only because it's a fairly good knock-off of a SIG made by a couple of small companies, all of which have had some financial difficulties.
I don't think its in production anymore, but I have heard rumors of a similar gun now being made in Canada. Some were made in South Africa for a time.
It is unlikely to have any collector value. You may be able to sell it for what you paid for it, if you're lucky. Rareness in this type of situation does not add value.
Its not a CZ (in either the sense that its made by one of the companies that CZs [CZ-BRNO or CZ-Strakonice]. or in the sense that a gun made in the CZ Republic qualifies it for the CZ nomenclature.)
Its apparently not a bad gun, but getting parts, etc., may be an issue.