I just upgraded and I have a few things that a 300 owner might want:

1 - extended life battery that piggybacks onto the unit. It makes it a bit fatter, but the new lease on life was well worth it to me. It's 6 months old.

4 - new stylus pens

2 - wall chargers

I'll mail everything to someone for $55.00 including shipping.

barry@raspyni.com (you'll have to do a 2nd step to get through my spam filter).