SCART to Component Transcoder
This device transcodes any standard SCART RGB video to Component Video. This includes support for both 15.7KHz and 31KHz video.


VGA to Component Transcoder
This Transcoder will convert any standard VGA Signal (either RGBHV or RGBS) to Component Video and will work all the way from 240p/480i to 1080p.


TurboGrafx 16 RGB Amplifier
Amplifies RGB video with output to a VGA (DB-15) connector and amplifies audio to RCA connectors. Attaches directly to TG16 expansion port and requires no external power.
Those could be in some demand if you can advertise them the right way. Might want to try wholesale selling them to more well know retailers.