Decided to makeover: http://viz.wtf/post/139307186583/i-wonder-if-they-all-have-a-different-filling/embed
After some experimentation, dropped pie chart and went for a bar then:
- One colour (all items express currency)
- Order by spending volume
- Added spending to bars and removed grids
- In order of not losing information from original chart which had a total, added total spend on header (not visible in image).