Change

|''begin admin transaction''| Bill |
|''change delivery city''|Auckland|''zone''|East|''flat rate''|12.00|''delivery rate %''|4|''to flat rate''|15.00|
|''complete transaction''|

----Check
|''delivery cost list''|
|''city''  |  ''zone''    | ''delivery rate flat fee'' | ''delivery rate %'' |
|Auckland| West|12.00|4|
|Auckland| East|15.00|4|
