Although increasingly critical, these topics are beyond the scope of this thesis. ICSI TR 92-018, 1992. Colin Parris and Domenico Ferrari. A resource based pricing policy for realtime channels in a packet-switching network . Technical report, International Computer Science Institute, Berkeley, CA, 1992.
Usage based schemes charge a price per unit of resource used.
Examples of this include a per packet pricing scheme explored by Parris et al. Unfortunately, fixed fee schemes usually do not reflect the costs faced by the provider. A user can use or even abuse the resource with out facing any penalties, monetary or otherwise. Colin J. Parris and Domenico Ferrari.