Shipping addons on custom ecommerce website PHP

Avg Bid (USD)
Project Budget (USD)
$10 - $30

Project Description:
I already have my shopping online website with 1 shipping carrier with kg price
i need addon in delivery shipping module as follow :
1. administrator can add another 2 shipping carrier.with the same format with previous shipping carrier
2. administrator can add 1 shipping carrier with expedition price. overal price per invoice. not per kg price.

note : all invoice, transaction history customer and other invoice/ record that effected with this patch addon , you should be aware and taking care of it all.
Terms :

no advanced payment made untill all works is done.
overprice bidding will be ignore
timelimit is max 2-3 days.
updated and skype freelancer is a MUST
dont bid if you not meet all requirement

Skills required:
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$ 30
in 0 days
$ 150
in 6 days