eshop custom changes to Joomla + Virtuemart v.3

There will be some simple changes to the Joomla Template. The Joomla site is using Virtuemart for the eshop system. It will be made a theme for the Virtuemart, how categories are displayed and how is the main product page. In the main product page, the user will be able to joom over the image, with the "magiczoomplus2" plugin. For the virtuemart each product will have title, short desc, desc, price per item, and will be also another price area. In the price area the admin will be able to set to a product some costs areas. For example if someone wants to buy 80 pieces of a product the price will be different. The admin for example sets 3 areas: Cost area 1: 1-30 pieces / 1,20 euro per item Cost area 2: 31-100 pieces / 0,90 euro per item Cost area 3: 101-infinity pieces / 0,50 euro per item The ∞ is the infinity symbol. So if the user wants 80 pieces, the system will make automatically the final cost before the user press the add to cart button. 80 x 0,90 = 72 euro The final price will automatically generated as the user sets the pieces he wants.. See the attached files for more infos. In the back-end the system will have some fields to set the cost areas and the price per item for each area. Of course the product will not have the usual price field. Because all prices will be seted from the price areas fields. So in the product page in VM, which the admin gives the SKU,title,desc,images,each will be added an area which we will call it “Prices List”. It will replace the normal price area. This area will have the fields so the user will add the prices areas (as many he wants) and the prices per item for the specific area. This system will work something like the "Attribute List" in the "Product Status" tab. Which the user set some fields, and press New and more fields are enabled. Will be given the demo live site, to check it, because some of them are allready done. Check also the attached file to see printscreens, how the site we want to work!