Warehouse distribution center

For a Pharmaceutical distribution company, develop an online order entry application to handle customer inquiry, partial search on various drugs name and add it to shopping cart. System should also calculate cost based on the contract for each customer and each customer's should have access to their 6 months of data. Admin should have access to at leat 2 years of data. Systme should also be able to maintain the Inventory and Accounting. Once this product is developed, we should have the capability to sell this product to companies that in need of this online application. Please contact me with your relevant experience to know more details about this project and examples.