Agriculture Marketplace

We would like to make a marketplace specially for agricultural products, where the farmers can place their offers and also the buyers can place their request. The systems needs to match the buyers request with the sellers offer. Finaly the buyer can choose the winner supplier. The buyers and sellers should have possibility to communicate via PMB and everybode needs to be also informed trough his private emale. PROCESS: 1.) Buyers and sellers can create posts for products they are looking to purchase or they are willing to sell; 2.) The parties will answer the clarification questions 3.) Receive and compare quotes 4.) Choose a supplier/buyer or negotiate further The solution must be functional on all popular browsers, portable for mobile devices, and multiple language support. Please let us know: - what other information you need to make an offer, - what language will you use for the script and what software environment will be need - when you can start and how much time you will need for the first functional version - the fee for the project and payment conditions - what kind of post development support you offer without any other fee or for extra fee, and what duration will have the technical support - how will work the testing - if you make also the SEO We will need the full documented, well commented sources Please let us known your references. Thanks