Retailer brokers Bank Perks to lure cash accounts

--Put checking and brokerage under one roof. Top brokers, Fidelity Investments, Charles Schwab Corp, and E*Trade Fiuanncial Corp, launch interest-bearing accounts, offers checking, debit cards, and rebates on ATM fees. --Offer interests 3.5%, 4.25%, 3.25% respectively. --ATM fee reimbursetment alone might outweight the downside of paying fees to use another bank's ATM or mailing in deposits. --competition from banks: BAC and Wells Fargo now offer free online trades for those who meet minimum balance requirements.