I recently had an idea when the dreaded diamond dupers sold a huge amount of diamonds to shops across EMC. This idea is called a Bank Account/Account Savings. The idea is you can store an amount of money in your account and that money will not be touched. So lets for say I have 200,000 rupees, I put 100,000 rupees in my bank account, now I have 100,000 rupees in my physical account. When someone tries to sell me a huge amount of items my physical account gets depleted, now I have 0 rupees in my physical bank account, but now I still have 100,000 rupees in my bank account leaving me safe.