Note: I have not done any price comparison-- so there still may be better deals out there.

- Platypus 2L is fine. No need for the 3L or 20L.
- Look at some Chlorine tablets also (MicroPur, AquaMira etc)
- For a pot: the BC Ti or SP 700 are good at $40. But the AGG pots are still cheaper.
- Firestarters: No need for anything fancy, a mini-bic and matches is fine.
- A filter is personal. I don't like the big, bulky filters. My preferance is the Frontier Pro ($20), but some people don't like it.
- If the Patagonia discount works, then their down sweater is a good buy at 20% off and so are their Capilene baselayer line.
- Do you have rain-gear? See if you can find a sub-16oz jacket.
- Windshirt? Montaine Lightspeed or Featherlite are worth a look, as is Patagonia's NineTrails. Not on sale, but I have Marmot's Ion, which is $40-- cheaper than the aformentioned.

Other things: Headlamp, trail runners, stuff sack/bear bag, hiking pants or running shorts?

Really, look at your to-buy list and go from there.