Idk if it's helpful to you, but I use these from AliExpress and have had zero problems . And they are like 1/3 the price . They're more than they used to be now ;/ but still much less expensive . They auto switch, work awesome.
I just found this on AliExpress:
$144.24 | Upgraded EUR SCART Converter 10 Input 1 Output Automatic RGBS Video Distributor Switcher Board for MD/MD2/SS/PS/PS2/PS3/DC/SFC