The cost of sending Ksh 500 is Ksh11.If you don’t have Ksh 11 on top of your Ksh500 don’t worry, you can send the money for free.
We know that sending Ksh100 is free, even if you send to 10 people. Since you have Ksh500 and you want the recipient to receive the Ksh500,what to do is, send Ksh100 five times whereby each time you send, you will not be charged.
By so doing, you would have saved yourself the agony of looking for an extra Ksh11 to pay Safaricom for the service.