Hi,
Greeting from Infoway,
I went through the detail you provided and understand your requirements.
Now To answer your questions.
1. I your site/app sellers comes and add products, The site management then confirms a discount rate on the product from the sellers, The site itself has few employees (consultants) they now helps in the marketing of the products, We currently are assuming that the consultants have a list of customers and there requirements they matches the requirements and then ask the customers to buy the product. when the customer buys the product the make payment that goes to admin. Then the product is delivered to customer. After successful delivery the seller is made the payment from the admin.
2. We will break down the whole project into 3 or 4 phase which will have certain module and based on the work , there will be certain price and time frame for each phase. Suppose User Module, Admin module etc.
First you will award us the project and set 25% milestone of total budget(only set, not release) and we will accept the project immediately and with in 1 day, we will provide you the Featurelist & ETA(Phase Wise break down with cost and time). Once you approve those document, we will start the project. We do all work on our development server. We will provide you phase wise update.
3. We need few clarification before giving you Budget and time.
****Please come for close CHAT****
Best Regards
RKT
INFOWAY TEAM