Temperature Probe for SN-10

The SN-10 must be recalibrated when a new temperature probe is installed.  The probe itself is only $10 but installation and calibration are required.  I can do the installation and calibration for an additional $39.  The factory says that calibration cannot be done by customers.  The total for the probe, installation and calibration is $49.  You will need to ship the SN-10 to me.  Shipping back to the customer is an additional charge.