@Shef as I understand, sold/traded/given away modes don’t affect the score in BATG. It’s just models in minus models painted, although early on I think someone clarified that models sold, traded etc that you were going to paint count as -1 each. This is why I’m on +20 rather than -80 
OTOH there is also “Shame Golf” (linked on my BATG thread) which has a few differences:
- models given away, sold, etc count as -1 each
- gifts don’t count as added to the pile
- bonuses for completing units & boxsets
- penalties for buying new release models
You can join me in Shame?