From Usefulsoft LLC:
Print Censor Personal allows easily viewing, controlling, and restricting printer usage on the LAN, helping you save hundreds of dollars in toners by getting rid of duplicate, restricted and unauthorized print jobs. The printer usage monitor can be controlled easily from any PC on the LAN. Set group and user restrictions on printer usage, assign and modify printing quotas, and pause or stop new print jobs. Print Censor Professional offers highly adjustable printing cost adjustments based on media type and size, type and name of each printer on your LAN. You can put on hold or moderate new print jobs before they go through, which leads to considerable savings in case of large printing jobs and expensive cartridges and paper.