Provides no penalty to switch from print to electronic. Libraries may be forced to take titles they don't need. Contracts can be very complicated, and libraries cannot guarantee the same purchasing power each year. Small libraries with small accounts may not qualify for this model. Libraries pay for the information accessed.
Publisher can anticipate amount of access to system.
Library pays for what it needs, and, hence, this is fair. The morning workshop participants dismissed this model entirely. The afternoon participants had difficulty understanding it. Unsuitable in a training environment whereby, for a limited time, an institution may require access by many users. Very complicated to determine user population.