Price Rule of Zicoin?

From January 1st to December 31th, All Customers who purchase more than 20RMB (including 20RMB) Zicoins will get extra discount of 0.5%-5% bonus Zicoins. Customers purchase amount will be given discount according to the highest level, for example: if you recharge 280 RMB, you will be given discount of 200 RMB level, so you will actually get 28000 + 28000*3% = 28840 Zicoin.

'Face value(RMB)', 'Zicoins', 'Additional rate', 'In total', 'Discount Rate'

'10', '1000', 'None', '1000', 'None'

'20', '2000', '0.5%', '2010', '99.5%'

'50', '5000', '1.0%', '5050', '99.0%'

'100', '10000', '2.0%', '10200', '98.0%'

'200', '20000', '3.0%', '20600', '97.1%'

'500', '50000', '4.0%', '52000', '96.2%'

'1000', '100000', '5.0%', '105000', '95.2%'