More often than not, a used piano purchased from a private individual has been neglected for years and is in need of attention. A qualified piano technician should look over the piano and perform any needed maintenance before it is played. A large part of your learning experience depends on a proper performing instrument. This is especially true when a student is just beginning to learn. In my shop, all pianos for sale are checked thoroughly.
Piano actions go through a preventive maintenance procedure.
Tunings are at A440 International Standard Pitch. Cabinets are cleaned and repaired as needed. I believe that a little TLC goes a long way. Everything is done to ensure the piano is in it's best condition when it leaves.