Here’s a short review of an inexpensive SCART / RCA switch from Otaku-Games. It doesn’t have any of the options or enhancements of the gscartsw, but I think it might be a good start for people looking for an inexpensive option!
SCART Switch Page: http://retrorgb.com/scartswitches.html
Otaku Switch: https://otaku-games.com/index.php?_route_=misc/rgb/scart-switches