this is all i could find:
Consular Visa Fees to Increase in January 2008
Consular immigrant and nonimmigrant visa fees will increase in January 2008, according to the American Immigration Lawyers Association (AILA).
AILA learned that as early as this week the Department of State (DOS) will publish the fee increases in the Federal Register with an effective date of Jan. 1, 2008. Nonimmigrant visa fees reportedly will rise from $100 to $131 and immigrant visa fees will go up by $20.
Some pre-paid visa fees may be grandfathered, but the details will not be known until they appear in the Federal Register notice.
AILA says the increase and its suddenness result from the FBI’s success in obtaining approval from the Office of Management and Budget (OMB) to charge DOS almost $20 per fingerprint for records clearance. Other justifications for the $31 nonimmigrant visa fee increase include the costs of systems that have already been in place.