These should really be 5 USD. It would only be worth 10 bucks if it were in 3D or they merged R/B/G into one game, which should be a cake walk. I'd only play through one game but 10 bucks is way too much for a retro game at this point, considering its not even physical.
Honestly, the fact that they said there will be more news/info on them between their reveal and February could mean they've added post-game content of some kind or done some major additions that don't effect the experience/change it, but rather extend it. Even if left practically untouched - there's a good chance we'll see some nice bonus content. This is Pokemon after all.