FrontAccounting developer needed

I have been using frontaccounting for some time now and I would like some custom changes. Could you please give me a quotation on how much will it cost if you develop it for me. 1. Be able to generate Monthly statements and not all the transactions 2. An easy product filter to select the product that you want to add on the invoice lines 3. Sales by customer by item and profitability. 4. Invoice reference number to be the same with invoice number . 5. In case the customer has his own pricing catalog and I want to add a product that is not in their catalog then it should get the price from the main price list. 6. The POS points should have there own product catalog and not all the products should be shown Let me know if you need anything else in order to give me a quotation.