Disc Brake donor vs Disc Brake kit....

Just for a point of reference. I had a 73 Dart doner car for the disk brake swap. I used the control arms and spindles from the doner. I then used the calipers and master cylinder as core for rebuilt parts. I purchased new; rotors, brake hoses and wheel bearings/seals.

The cost of going this way is as follows;

Loaded Rebuilt calipers: $60 for both
Rebuilt master cylinder: $15
New rotors: $90 for both
New hoses: $30 for both
Wheel bearings & seals: $25 for both

Total: $220

Question is; Is the cost of the doner plus the cost of the new/rebuilt parts minus what you sell off the doner cheaper than what an after market kit costs minus what you can sell the doner for.