Description:
This contribute Weight Base Discount as opencart plugin to extend the opencart avaibility to auto discount when cart weight reach the preset limit.

Features:
Flat rate or multiple ranges base discount
Discount base on weight and Geo Zone
Friendly text description to show at store front

Example :
Flat Rate Discount
Discount Rate : 5
total = subtotal - 5

Range Base Discount (%)
Discount Rate : 5:5%(weight:discount) , 10:10%(weight:discount)
If weight < 5 then 5% applied, If 5 < subtotal < 10 then 10% applied
total = subtotal - subtotal(5%)

Range Base Discount (fixed rate)
Discount Rate : 5:5(weight:discount) , 10:10(weight:discount)
If weight < 5 then -5 applied, If 5 < subtotal < 10 then -10 applied
total = subtotal - 5

Easy Install
1) Unzip and upload the contents to the root directory of your OpenCart installation
2) Logon to administrator page, goto 'Admin->Users->User Groups->Edit the Top Administrator'.Then find and check the total/weight_base_discount for both modify and access. Save.
3) Logon to administrator page, goto 'Extensions ->Order Totals -> Weight Base Discount'.
4) Install the module, and click edit to configure.
5) Adjust the Sort Order before the Total.Save.

Note : The calculation does not included tax deduction.

Demo Site:
http://promo.hooliao.com
username : demo , password : demo