It's out of stock now, but it was in stock just a few days ago. Probably sold because of the recent run of SS x-wings (all gone now), but they may get more in. If nothing else pans out, and you get desperate, that might be an option.
another option might be to pick up one of the Jedi starfighter ROTS ships that are 1:24 scale. They don't seem to go for very much on ebay and the r2 should work