DB Electronics has been out of stock on their plug-and-play Turbografx RGB thing for quite awhile now. I think I saw StoneAgeGamer have them instock for approx 2-3 hours once but I wasn't willing to pay an extra $40 for a plastic box covering it lol
So I ordered this thing from china like a month ago (something like $18 shipped).....finally showed up. Haven't been able to try the amplified RGB output from it yet (need to order a Genesis2 SCART cable, kinda unsure if I need csync or sync on composite video cable), but the composite video looks a lot better than it does coming straight out of the designated pins on the back. Previously I had some crimp connectors attached with my own ghetto DIY composite+stereo cable and this is already an improvement.
Once I figure out which SCART cable I need for it and get it running in RGB I'll probably 3D print a cover for it that makes it blend in with the system better.
EDIT: Good thing I sent the seller an e-mail, he said the SCART cable I buy should not have any components in it since the capacitors and resistors are already on this board. I'll probably just make my own using the RCA style plugs on the back (it has RCA connectors for RGB too)