LexisNexis has offered several updated teaching tools to help librarians teach summer associates the information on cost of use of commercial legal research services.
Here is a realistic simulation walking students through an assignment at a small law firm including detailed pricing information on their Lexis Advance® subscription, efficient research skills and calculating client charges.
This PowerPoint presentation can also be useful: Law Firm Research Charges and Cost Effective Research Skills.
Updated literature: Be Cost Effective for Employers and Clients
More materials to help students, such as Think like a lawyer.