amigakit.com - Amiga RGB To VGA Adapter has had a redesign with new enclosure and two page product instructions. Now available in two versions: unbuffered and buffered from Amiga Kit Amiga Store:
Amiga 500 1200 2000 Video Rgb DB23 to VGA SVGA Adapter - Etsy
Amiga VGA Adapter buffered (DB23F + PCB inside)! from CMD marketplace on Tindie