I think basically if you guys want to improve your sales through Cash Item:
Consumable: Woe White/Violet/Blue Potion Box (That heals 10% per pot not the one in Cash Item). Personally I think this will be sell like hot cake if price is fine .Suggestion 40 KP per box.
make BM3 x10 box . Suggestion 700kp ~ 800 kp per box
HE gum x 10 box in Cheaper rate . suggestion 300 kp per box
Costume: 2 Weeks New Costume ( Give temporarily effect like exp boost ) , Greed Effect , Teleport Effect , Drop Effect ( boost like 10-20% from existing drop) - All temporarily effect.
More Jro costume
Refine Upgrade: Safe to +13 in very premium price probably Suggestion : 2000KP each cert? I suspect a lot of duping in HD bradium and HD cranium recently because I saw they are number of people getting +14 or +15 lvl 4 weapon. Hope You guys working towards it. Mark up the Enrich Box Prices too.
Please cut down the possible outcome to 6 - 8 item.
Alternative Spirite and carts etc...
Remove HE gum and Bm3 from lucky box. All new gears that we have suggested too are always welcome. Golden Wing etc