I know SCART is the 'in' thing at the moment, but IMO it's a silly and a poor choice for a RGB connector for many reasons. Professional media switches often are cheaper and more versatile. Extron media and cross point switches are usually cheaper a single SCART to BNC adapter. Both major RGB cable manufactures provide most cables in a BNC and SCART options. Unfortunately not a lot use VGA (15) or RGB (9) standard connectors which are more compact and generally more accessible.
SCART has been the 'in' thing, the industry standard, for systems which output RGB natively in many parts of the world you know! We're not talking about a short lived product either - talking about decades here. It's a time-proven reliable and cheap connector. Just because we didn't have RGB in the USA in consumer CRT's doesn't discount SCART as a valid connector type.
For us in the retro gaming world, where everybody and their mother has a modded system, it also makes it EXTREMELY convenient and easy to do things like add a resistor(s), or add something like a sync stripper chip hidden inside the easily accessible and roomy SCART head (had to do that for my PS1 and PS2). I've had to add resistors to 3x devices because my Extron Crosspoint outputs 5 Vp-p sync and certain devices like the Shinybow RGB to YPbPr converter, OSSC, and XRGB-mini Framemeister can only take ~1 Vp-p safely - SUPER easy to do in a SCART head. That roomy and easily-solderable SCART head also let me easily switch the connector type from male to female when I used a SCART to BNC breakout cable normally used on the input side, on the output side for the aforementioned devices. NONE of this would have been 1/10th as easy to do on a super-small VGA or DIN-style connector (and there's no way I could have modded those style connectors without liberal and messy use of electrical tape either - I'm simply a layman with all this and the SCART is great for my beginner skills). Great for people who need to go to RCA or Phoenix connectors for audio as well.
For cost, Retro-Access site is down now (they're on a cruise), but their regular SCART cables are usually what, $22? Whereas the BNC type are usually around $60 if my memory serves due to the much more intricate building process (I'm assuming - to do things like hide those resistors in-line somewhere). Retrogamingcables.co.uk (unless I'm going to the wrong part of their site), doesn't make straight to BNC cables, only console to SCART cables (then sells the SCART to BNC breakout cables).
For switchers, when talking about high-end units like the gscartsw_lite and Extron Crosspoint, with all the adapters needed for both, they're within about $30-40 of each other for a 8x2 setup - although I will agree with you that the Crosspoint FAR exceeds what the gscart can do without a doubt functionality-wise (and I would love affordable straight-to-BNC console cables...but deal with having to use adapters which means having to settle for SCART with all it's pros and cons).