If you want to buy a small packet of seeds from me, go to this post and order through paypal.
But I'm sure you can find chia seed in your local health food store. They will germinate and grow. And you'll have surplus to eat.
Also, you might want to get in touch with these folks: http://deborahsmall.wordpress.com
They are growing your Californian native species of chia and may have a source of seeds.