This just moves where in the lawbook the law is. VIII is the Laws of the Lands, basically disjointed laws. XIII is actually the section on economy.
For reference: LB: VIII. O.
O. Fraud
1. Any person who by means of deception persuades another to act or not to act shall, if zie profits and the victim, or zir representative, suffers a loss, be found guilty of fraud and suffer the ordeal set by the Imperial Judex.
2. Any person who makes use of a service for which there is a stated fee, without paying that fee, shall be found guilty of fraud and suffer the ordeal set by the Imperial Judex.