I try to spend as little money as possible on everything, while still buying quality stuff. This year I bought new everything except boots. New goggles, helmet, jacket, gloves, pants, balaclava, bindings (ended up buying two actually), board (ended up buying two of these as well), and board bag. I didn't pay more than 50% of MSRP for any of this equipment (with the exception of the second board and bindings) as it's all last years models and I bought them all during the summer.
That being said, currently the highest priced item in my setup is my second board, which is about $200 more than my second highest priced item, my first board.
Long story short, I seem to spend the most on boards simply because they cost the most. (Though I am currently rocking a $500 jacket I got for $150, so at full price that would give my boards a run for their money).