I want customers to be able to get a quote for installation via our website and be able to buy it online. I sell window film. Its available in a variety of sizes and I add the sizes via configurable products. The customer has the choice to choose the width in milimetres from a drop down box then the length in metres from a second drop down box. I want to be able to create a line of text saying "I would like a price for you to install the film for me" and then a checkbox next to it. When the customer clicks the check box another line of text will show underneath saying "Please enter your post code" where the customer can then enter the post code. Heres where it gets tricky. In order to work out a quote we need the following formula we need to work out the distance from our post code to the entered post code and multiply by £1.20 and add £80, this is our call out charge. We then need the square meterage (so mm x m divided by 1000) - this need to be multiplied by an amount depending on what film theyve bought, the majority will be multiplied by £8 but some of the more difficult films to fit charge more. We can add the installation cost in the attributes maybe? It will then come back with the total installation cost and the customer can add this to the cart as well. So to confirm the installation cost will be: Distance (in miles) from our post code to customers post code multiplied by £1.20 = distance charge £80 = Call Out Charge Width in millimetres multiplied by the length in metres divided by 1000 = square meterage charge Installation cost equals = distance charge + Call Out Charge + = square meterage charge If someone can create this please could you provide a price