Make a price calculator

Job ID: 33641889

Budget: $30 – $250 USD

We need a price calculator that fetch prices from 3 different sources, depending on the selection on the front page.
We currently got our price list as a excel sheet with the following variables, 4 difficulties, size(cm3) and 3 different amounts(1-4, 4-10 and 10+). The price calculator is for calculating vinyl decals and we need price calculator where we have a separate front page or a separate tool where we enter size ( width and height in cm that gets calculated into cm3), select type of vinyl, weeding difficulty and amount and it then gets the correct price for that amount, size and difficulty and shows the price per decal and total amount(piece price x amount) with(25%) or without(the price list are without taxes) taxes. We also need a function to simply increase the prices in the priceless to keep up with price increases, ex. percentage increase, so as base it's set at 100%, but as product prices increase we can increase the percentage to 102% and so on and the price list updates with new prices.
It needs to have a intuitive and nice look on the front page.