calculator for window blinds

I'm looking who has already developed or willing to make window blinds dynamic calculator. The customer will have to enter the length and width required, also slat width option (16mm, 25mm, 35mm, 50mm etc) some products will have additional options such as stained or not. The price will increase every 10 sq cm or so by whatever amount. pretty much every product will have different prices, so it have to be very simple way to upload product with specific pricing. Also I will need you to upload products on website (around 150 products). Website is on wordpress platform, so should be compactable.