OSCommerce addon fix

IN PROGRESS
Bids
17
Avg Bid (USD)
$44
Project Budget (USD)
$30 - $250

Project Description:
Few months ago I have installed following addon: http://addons.oscommerce.com/info/1826/category,3/search,category+use+shopping+cart
Recently I have found certain problem. This should hide the price and purchase button from the catalog if no price has been entered, instead of showing a price of $0.00. But once I enter certain price (10$ for example) it will display 0$ instead of 10$
I need someone find a issue and correct the code.

Skills required:
OSCommerce, PHP
About the employer:
Verified
Public Clarification Board
Bids are hidden by the project creator. Log in as the employer to view bids or to bid on this project.
You will not be able to bid on this project if you are not qualified in one of the job categories. To see your qualifications click here.