From the Abstract of a Law Library Journal Article (Vol. 103 no.1):
[Laura] Justiss conducted a survey of law firm librarians in 2010 that identified electronic research database alternatives to LexisNexis and Westlaw and ranked them by subscription frequency. The survey also generated information regarding suggested or mandated legal research policies in law firms for the use of alternatives to LexisNexis and Westlaw and examined their applicability to billable and nonbillable research. Lastly, it examined the prevalence in firms of flat-rate pricing agreements with LexisNexis and Westlaw.