I'm not up to date with all the legal mumbo jumbo, but how would just buying a flash cart be any better than buying a repro cart? Both are used to play the translated ROM on actual hardware, and by purchasing a flash cart, I'm giving someone money in exchange for that ability. If the translator doesn't want people to monetize his translation, shouldn't he be against flash carts too? The seller of the flash cart is making money off my ability to play the translated ROM on actual hardware, just like the repro maker does. The only difference is that I only have to pay for the privilege once with a flash cart versus once for each game with repros. The general principle of paying for the ability to play the translation on actual hardware is still identical.