Anyone know where to get waterbottle lids?

[FastforaSlowGuy]

I really hate the lids on my Purist water bottles and all the other fancy lids. I just want regular old lids, like these:
http://images.evanscycles.com/product_image/image/0e2/2b4/7c6/123623/specialized-big-mouth-water-bottle.jpg

Buying lids for my existing bottles seems like the cheapest and least wasteful way to get there, but I can't find a source for just the lids. And everyone seems to be going to the Purist type caps.

[CaliFly]

This is called the "Big Mouth" lid. Seems to be hard to find as Spec only carries the "Watergate" and "Moflo" on their website.

[christian]

I will trade you as many WaterGate lids as you have for "normal" specialized lids as you want. I can't promise what colors the lids will be.