As a pack it doesn't work as you won't get to a value that after dividing by 2,000 gets you a natural number.
A Highland Forge Claymore costs 4,500 ¥ and you pay 7,000 ¥ per Force for a weapon focus.
But since you're either converting 1 karma to 2,000 ¥ or buy PACKS that consist of stuff with a value that is a multiple of 2,000 ¥, I suggest you take a look at PACKS for inspiration but ignore them altogether when it comes to purchasing your gear and do your math on your own. It will get you a better result in the end.