Hi, We are in the process of developing a new website. You can view our "in progress" product page here: http://eternityringsandbands.com/eternity-rings/round-diamond-shared-prong-eternity-ring/ We are looking for a programmer who can customize the cart, so that the following two things can happen: 1) When you select a certain attribute, the main product image changes automatically/dynamically 2) Alter the way the attribute pricing works. Right now, Pinnacle allows either a dollar amount or a percentage attached to each attribute. It takes the sum total of all the attributes and adds that to the base price. We would like to change this so that the pricing builds upon itself (using percentages). Example: if the first attribute adds 50%, and the second attribute adds 10%, we want the 10% to be calculated based on whatever the base price + 50% is (based on attribute priority/sorting). (Right now, the cart takes 50% + 10% and then adds 60% to the base price.) We want to plug in various percentage amounts. We don't really care how this is accomplished... PHP, Javascript, AJAX... etc. But we are looking for a quick and cost effective solution that does not have any bugs. Please provide a quote and an estimated amount of time needed to complete this project. Any additional info (a link to your website, your portfolio, resume or references) would be helpful too.