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:
QUICK-BIT: Amiga Display VGA Adapter | 8-Bit Boyz
New AMiVGA - Amiga Video RGB DB23 to multisync VGA adapter. Electronica4u.com! | eBay
Amiga 500 1200 2000 Video Rgb DB23 to VGA SVGA Adapter - Etsy
Amazon.com: RetroArcade.us Arcade Game RGB-CGA-EGA-YUV to VGA Arcade HD- Converter PCB (GBS-8200) Converts Older Arcade Systems to LCD Monitors : Toys & Games
Amiga VGA Adapter buffered (DB23F + PCB inside)! from CMD marketplace on Tindie