I gotta say, $100ish for complete copies of MMBN 3-6, and both versions of each one to boot, had to be one of the best deals in this thread. If I didn't already own cartridges I probaly would have snapped it up myself.
$55 for cart-only copies of the first 3 NES games isn't a bad deal either, but I think some people complain just for the sake of complaining, like that movie-fan guy. I at least try to be constructive with my criticism, if any.