Official ones probably, it would depend greatly on the game and the price.
Regular old repros never. I may be on my high horse about this but I don't like people making money off of someone else's work without the legal means to do so.
What if you're only buying a nice looking cart/case/manual set using new original artwork? How is that different from someone profiting from an unofficial strategy guide or youtube gameplay videos?
If you pay someone to swap out the rom chips in a Japanese cart with an English translation, how is that different from taking your console, TV, or any other electronics device to a repair shop? Do you also refuse to buy used copies of games (your PCE collection would be pretty small otherwise)?
Don't forget how often 8 & 16-bit gen games used unauthorized art/story/misc properties that they didn't have the legal rights for. Snatcher is the ultimate blind fanboy production which absolutely does not take into consideration intellectual property rights whatsoever.
Game developers and publishers aren't saints and there's way too much gray area in profiting off of the work of others. Even if you never buy used games and only download roms and plag on emulators, someone is profiting from the ads on those host sites. Just as posting in this forum takes part in creating profit for the unauthorized use of the PCE/PC-FX names, logos, artwork, etc.