Mortgage lenders sold a total of $196.78 billion of higher-priced mortgages to investors last year, with the largest flow of business going to affiliates of the lender, usually a parent bank, according to an Inside B&C Lending analysis of 2007 Home Mortgage Disclosure Act data. Some $287.78 billion in high-rate loans were originated in 2007, according to the... [Includes two charts]