Some Quest

At around wat age does greys start to molt? And when greys are young, their eyes and feet are darker in colour. Mine is now around 6mths of age. its feet look normal but its eye is 1 side bright 1 side dark.. is this normal?

Btw my grey is not vocal at all. it doesn't chirp or make any noise at all. At the most a few chirps when he sees me..

And is it wise to buy stuff from overseas?? wat are the charges like for a parrot play gym??