Need formula for price based on quantity and product name on a separate sheet.

What I'd like to do is have it where I will enter a quantity in column 'D' on sheet 1, and column 'I' will automatically formulate a price based on quantity multiplied by the price per unit which is set to a corresponding style number on sheet 2. It would also have to take in account the style number on sheet 1 (column B) and make sure it matches the style number in sheet 2 (where it is in column A).

I've attached an example with prices already filled in based on manual calculations. Can this be done? Any help would be greatly appreciated!