(c) Except as otherwise limited by this subsection (c), any person for a debt bona fide due may confess judgment by himself or herself or attorney duly authorized, without process. The application to confess judgment shall be made in the county in which the note or obligation was executed or in the county in which one or more of the defendants reside or in any county in which is located any property, real or personal, owned by any one or more of the defendants. A judgment entered by any court in any county other than those herein specified has no force or validity, anything in the power to confess to the contrary notwithstanding. No power to confess judgment shall be required or given after September 24, 1979 in any instrument used in a consumer transaction; any power to confess given in violation hereof is null and void and any judgment entered by a court based on such power shall be unenforceable. "Consumer transaction" as used in this Section means a sale, lease, assignment, loan, or other disposition of an item of goods, a consumer service, or an intangible to an individual for purposes that are primarily personal, family, or household.