I think you are confusing assets and funds.....there is another block that lists transfer of funds from a Sharebuilder account to your checking or savings account as having $0.00 cost.....I think the $50 charge is for transferring stock assets, not cash funds, two different things.
Electronic funds withdrawal.....Electronic delivery of funds from a ShareBuilder account to your checking or savings account.....No charge
Full account transfer out......Transfer of all assets in a ShareBuilder account to another firm......$50.00
Partial transfer out.......Partial transfer of assets in a ShareBuilder account to another firm......$10.00 per security ($50.00 maximum)
Notice how they describe transfers out of assets as transfers to another firm, such as MorganStanley or something like that, and the partial has a $50 maximum with $10 per security charge.....the security would be like a stock or bond or that sort........not just cash from the account.