Diosoth said:2) it won't work on NES clone systems. This seems like intentional blocking as there's no reason for it not to work otherwise.
I don't know about that. From what I've been able to tell, those NES clones are rarely perfect and can have problems with playing some original carts. I find it perfectly reasonable that they might not work right with a flashcart. The problem is with the clone being imperfect, not the flashcart being sabotaged.
But $135? Holy moses, that's a lotta money.