On PackageRadar website «Package is being prepared for delivery» status means these statuses of Montenegro Post:
Tracking package of Montenegro Post
With the use of our tracking form you can easily check the status of your package. Also if you want to tracking Montenegro Post and get your package location updates to your e-mail, you can Register on our website.
Montenegro Post — is not the only postal service that you can track at PackageRadar. See full list of postal services available.