The cost to double glaze a window can vary greatly depending on the design, size, shape, style and materials required.
Some factors that can affect the final price include the following:
The number of panes of glass (more panes means a higher cost)
The type of glass used (toughened or safety glass will be more expensive than standard glass)
The type of frame and trim used (metal frames are generally more expensive than wood or uPVC frames)
The complexity of the design