Maybe: save all the pieces.

My dentist was able to remove the crown, and sent the remaining piece back to the fabricator (along with new impressions). The repaired crown was a lot cheaper than the original one.

(In my case, the crown was on an implant. For a crown on a natural tooth root, non-destructive removal of the metal part of the crown may not be possible.)

You are correct. Broken crown is garbage. Need a new impression and a new crown. Depending on why the crown broke, he may need to alter the tooth stump as well.