I would think that the Game and Watch games have to be at least an R7 since they were only available online and you couldn't even buy them. I don't think that means that they would be worth all that much though, at least not now. They're pretty simple games with little replay value so they're being sold constantly now, just wait a decade and they might be much more difficult to find.

I'm looking through ebay right now and most of the games listed are the Japanese version, there are several listings of the US version for the first collection(4 listings) but only a few listings for the second collection(2 listings). Just for comparison, Bebe's Kids is listed as an R7 and there's currently 9 copies listed on ebay, most are priced around $10.

I personally want the games but I don't want to spend much on them and I don't think I'd ever be able to save enough points to get them, at least not enough points for both games. You need 800 points for each title, that's either 16 first party Wii games or 27 first party DS games for each collection. While I might have over 27 DS games, they're not all first party games. I just don't see how many people would get both collections by redeeming points, could there really be more than 2000-3000 copies of either collection?