165pts is for 5 models, 330pts is for 10 models.
So either 1 Champion and 4 Terminators making 5 total or 1 Champion and 5-9 Terminators.
The reason for this is that if you needed a squad of an odd size anything more than 5 models costs 330pts. (Generally not worth it.)
Ahhhh, I'm sorry, I thought that was the points value per model. That makes way more sense.
Hahahaha, we would play with WAY less models if that were the case!