Not sure how long ago it came about but Amazon has a Grocery area in beta with non-perishable items. It appears that a good chunk are organic or specialty items (almost 300 gluten-free items). I’m uncertain of how competitive their prices are. They do seem to have some bundle deals.

One of the new features: Shopping List. It allows you to keep track of things you buy routinely so you can order them all with ease.

At Amazon Grocery, you'll find longtime staples, from Kellogg's to Jiffy Pop. You'll find new entries, such as Kashi cereals and Kraft Easy Mac microwavable snack packets. And when we carry a brand, we'll try to carry every flavor available: not just the most popular flavors of Jell-O, but all flavors, from apricot to wild strawberry and the 70 flavors in-between. We're also making regional favorites like Andy Capp Hot Fries available nationwide, and making hard-to-find specialties like Zico Pure Coconut Water a standard part of our mix.

And for the ngc4lib’ers, no you do not now need to offer groceries at your library. ;-)