Link for update tier price http://ds-24322.ds-10.com/~tamsigns/index.php/storm-hydro-2.html#.UMSPWqOnzFo Price calculation Base price £100 Custom option 1 + £10 fixed Custom option 2 + 50 percent… (Budget: $15-$25 USD, Jobs: Magento)
update tier price & calculate custom price by tamsigns