Hi,
I've sent your task to our Magento developer for research and provide the final cost. But as a rule, instal plugins takes 3 hours ($25/h). Would you like any plugin customizations?
Early tomorrow I'll come back with a final cost and suggestions.
We are Magento certificated team, successfully delivered Magento stores with configurable products, as well as designed multistore environment, multi-warehouse and multi-shipping features.
Look at the examples of what we've done:
[login to view URL] (Magento CMS, PHP, MySQL, JavaScript, CSS, AJAX)
[login to view URL] (Magento CMS, PHP, MySQL, mobile version)
[login to view URL] (osCommerce3.0 CMS, PHP, MySQL, JavaScript, AJAX )
***Also, our high-qualified team is ready to provide you custom-built Magento extensions.
Regards,
Vera