First and foremost, I wouldn't say that a trooper's potential cost or SWC is open information - you don't need to volunteer it. I would say it is information outside the game. Next consider these three Ghulam that your opponent is asking about when it comes to costs. This is why that information is private (and so that it's not too easy or obvious to calculate exactly how many points are missing on the table) GHULAM Lieutenant HMG / Pistol, Knife. (0.5 | 20) GHULAM HMG / Pistol, Knife. (1 | 20) HAFZA Heavy Rocket Launcher / Assault Pistol, Knife. (1.5 | 18) Yes, that's three Ghulams with HMG. You're not required to tell your opponent their cost, but if you do you are required to not be dishonest beyond what the game makes allowance for. If you choose to answer with a points value, the answer you should give in all three cases is 20 points, 1 SWC. It is your choice to give additional information such as that the LT HMG is cheaper in SWC, but you don't need to tell your opponent that nor do you need to identify which model is the LT HMG. Nor do you need to tell your opponent that you've got 256 points and 4 SWC on the table that they can see. That's going a bit far in my opinion, even against a newbie (who is better served knowing that there can and will be units hidden as AD or Camo).