Complete website project

I already had tried two times and lost a lot of money on trying to achieve to have my online store. I have only achieved to have a page that requires to sort the categories on a different way and to add the oprtions required to sale. UPLOADING Product information is required. [login to view URL] is the site for the store I need to fix my online store to allow me to upload items and feeds instead of 100% data entry.I need to update databases by designer (10 designers- 10 dataases) [login to view URL] www.weddingstar.com---------> INCLUDES A WIDGET TO BE USED....I NEED IT FUNCTIONAL I need products to be sold with personalization options I need products to have more than one price depending on volume of sales (See attatched ) I need to "create" a sales option "Wedding in a bag" offer (See attatched Excel Wedding in a bag" rules for % discount) I WILL ONLY HIRE A COMPANY THAT CAN SHOW ME TO BE ABLE TO CREATE WHAT I AM REQUESTING. PLEASE READ CAREFULLY MY JOB NEEDS. i WILL RELEASE MILESTONES BASED ON PERFORMANCE AND COMPLETION OF PARTS OF MY REQUEST. Above is the exact type of store format I want. I sell same products and favors and need all the features in here. What will be the most affordable quote? I AM IN NEW YORK AND PREFER HOURS TO BE AT MY TIME ZONE.