More TurboGrafx/PC Engine interesting items on eBay:

https://www.ebay.com/sch/m.html?_ssn=jasonbar&_sop=1

Homebrews:
Implode, Insanity, Meteor Blaster DX, Mysterious Song, Revival Chase

Audio:
1992 Hudson Complete CD-ROM2 Music Works

CD "magazines":
Ultra Box Sohkan, Ultra Box 4 Go, Ultra Box 6 Go

Loose discs:
Blood Gear, Efera & Jiliora, Gotzdiener, Solid Force, Summer Carnival '92, Kisou Louga

Thanks,
-Jason