LJM GROUP is the premier Parcel Carrier Contract Negotiating & Invoice Auditing firm in the U.S. We service more than 1,100 clients nationally and audit 300 million shipments yearly. Our tenured staff has helped negotiate more than 50,000 parcel agreements for many of the largest shippers in the country. We hold immeasurable insight to carrier pricing structures and negotiation practices, making us uniquely qualified to understand carrier agreements. Savings are never less than 10% and often exceed 20%. LJM GROUP-Cost Management and Spend Recovery.