We are a team of designers and developers with expertise and experience in Photoshop, HTML5, CSS3, PHP, AJAX, JQuery, XML, Wordpress, Bootstrap, CodeIgniter, Laravel, Google Map API and MySql.
We have designed and coded many custom sites and applications of varied extents and complexity. We have coded custom CMS, integrated Wordpress. We have also coded calculators.
I have read the overview of your requirements and am confident of delivering as required. I request you to share detailed requirements - algorithm for calculating shipping cost along with all variables etc. Please also share details about the rest of the site - pages, design references etc. Also who uses the calculator - any visitor? Complete details will enable me to suggest the best way forward and also assess scope of work precisely. I will revise / confirm my bid accordingly. Detailed specifications and inputs will also help me to make an informed commitment and deliver as required.
I ensure a very thorough job and also support if you need changes / enhancements in future. I look forward to hearing from you and working on the project.