When we got the shop update , i was close to full lvl 7 refine in my pos4 (needed 200) and , so i bought med refines first . Then i bought 300 keys to be 100% sure i'll have 1050 for the rebate . Then i started a healthy 50/50 split between bells and keys . Got Jonin minato bond skill today , so starting tommorow , cave keys online is here . The 2k keys in every rebate is here . Same goes for charms in sun shop , dunno about you but that 1000 charm rebate with the lvl 6 rainbow magatama looks HOT