Honestly, 300,000 in the first 10 days is not particularly good ...
Effectively less than 1% of the PS3's current userbase was "hyped" enough to rush out and buy this supposedly "game changing" add-on; and sales are far below what similarly priced successful controller based games have achieved. While it is far too early to claim that it failed, or that it is doomed, it will have to maintain sales at this level or higher in order to prevent third party publishers from backing out on it; very few publishers would feel good about developing a game for a "system" that only had a couple million sales and was only selling a 50,000 to 100,000 per month and very few retailers would want to stock PS-Move games if they could devote that shelf-space to a PS3 game which would sell better.
