We need to prepare a requirements list and discussing them in details before we can start.
Relevant Skills and Experience
C#, SQL Server, PHP, MySQL, CSS, Javascript, AJAX, Jquery, DevExpress.
Proposed Milestones
$2000 USD - Preparation of functional requirements.
$10000 USD - Logical design
$25000 USD - GUI design.
$40000 USD - First version of the solution
$12473 USD - Final version