I was looking over the armour upgrade rules and am a little unclear as to how it works. It seems in general when buying a complex item you take the most rare item and apply a -10 modifier on the acquisition roll for each upgrade or add-on. Then in Black Crusade I saw that each armour upgrade applies a -5 modifier to the roll.

To make things even more complicated - take a look at the "Lathe Wrought" option. It is near unique and says to treat the armour as best. Does this mean upgrade the armour to best and then apply the lathe wrought abilities or is the best quality included in the price of lathe wrought?

Say we want to make a suite of lathe-wrought carapace armour with impact gel inserts. The lathe wrought is the most rare so we start with that: near unique. Then we apply a -30 mod to the acquisition roll to take care of best quality requirement. Then we increase the difficulty by 10 for base suite of armour and a further 5 or 10 (depending on which rules) for each additional upgrade, up to a max of 3 upgrades. So a full modded suite of lathewrought armour that would have a base of "very rare" would be "near unique - 60" Does this sound at all right?

I think what would be really helpful would be an example of how to apply lathe wrought and another additional upgrade to a suite of power armour. Anyone feel like helping me out?

It's -5 in RT, and -10 in BC

You take near unique (-50), then carapace -5, and another -5 for gel for a total -60. I think you don't get the modifier for single item because of the near unique quality. (I dont remember if near unique has the same modifiers as in BC, I think not, but you get the point).

You dont pay extra for best quality. Its combined into the avaibility of lathe wrought armour, and it does what it says in desciption (you dont apply the best quality again to it).

Thanks, that example was very helpful

where is this Lathe Wrought armour upgrade?

Hostile Aquisitions I think. As are all amour upgrades.