We rent loggers to anyone who needs to evaluate conditions in an area for a short period of time and cannot justify purchasing his/her own TRAK-R Logger. Sample Users: Attorneys Farmers Libraries Schools Hospitals Museums Rentals start as low as $15/week for a 4 week minimum. A rental entitles you to receive one colored graph per rental period. Additional graphs of periods of particular interest are available for $7.50 per period requested.