If you're updating from 1.0 I recommend to re-generate config.yml

* Improved /bp buy command & removed /bp buy <number> command
* Added messages.yml file
* Added logger setting (enabled by default) - it logs any "successfull" plot purchases
* Added group discounts
/bp groupdiscount enable/disable - enables/disables group discounts
/bp groupdiscount <groupId> set <valuePercent> - sets discount for groupId with given name
e.x: /bp groupdiscount Group1 set 10.0
By default, plugins check for max. 10 groups; if you want to have more, change "NumberGroups" value in config.yml to any other and add lines for new groups.
GroupId cannot be renamed. GroupNane is name of group from your permission system.