Large chain grocery stores won't have specialty/novelty sauces (not the kind to sate a chilehead's appetite anyway). I've been getting mine online from a merchant on eBay ( http://stores.ebay.com/satketsgeneralstore ). I didn't do much price comparison elsewhere (it was about the same on amazon), but the prices here were reasonable, and the PayPal payment option was convenient. The delivery included in the cost was extremely fast, and that was clincher for me.