Every month, Mark Barnes used to buy $600 worth of new, name-brand inkjet and toner cartridges for printers that churn out a steady stream of contracts and marketing material in his real estate office.
GRAPEVINE, Texas -- Every month, Mark Barnes used to buy $600 of new, name-brand inkjet and toner cartridges for printers that churn out a steady stream of contracts and marketing material in his real estate office.