IB US Stock Trading http://www.interactivebrokers.com/en/accounts/fees/commission.php?ib_entity=llc The unbundled pricing plan seems to be more complicated than its future counterparts. I especially have not many clues about "exchange fees". I'm not sure how I should select between IB "unbundled" and "bundled" stocks pricing plans, and most importantly, how it compares with other brokerage firms. Question: 1) What do I need to consider when I choose between "unbundled" and "bundled"? 2) How do the pricing plans compare with other brokerage firms? 3) what're clearing fees? Does it apply to selling shares or shorting? 4) How about regulatory fees? Will it charge differently for an non-US citizen? Thanks!