WordPress E-Commerce Site - Checkout Bug fixes

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
We have 5 bugs that we need to fix ASAP. This is a custom system built using WP e-Commerce v3.8.6.

These are PHP/Javscript issues and so we need an expert in those technologies.

The five issues break down like so:

3 Checkout issues -
#1) Calculation of tax isn't updating
#2) Coupon Update isn't happening without a second, manual click
#3) Tax is being calculated incorrectly for coupon items

1 Google Checkout issue -
#4) Shipping options not passing to Google Checkout properly

1 PayPal Checkout issue -
#5) When using a coupon code on a sale item, the wrong price is passed to PayPal

We're looking to begin ASAP and willing to pay a 100% milestone. Thank you -

Skills required:
eCommerce, Javascript, PHP, Wordpress
About the employer:
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