As a Premier Plus, I know that I can check 3 bags of 70 lbs, and no larger than 62 linear inches, each, when I fly from US to China.

Now, the question is, I would like to bring back a LARGE speaker with me. The question is, what is the cost for going over 70 lbs? Going over 100 lbs? Going over 62 inches?

Is there a limit on how big or how heavy a bag can be before they will actually refuse to check it?