That's a tough one - considering the blurry definition of "grocery item", they'll end up with a lot of frustrated customers who find they need a premium upgrade

That's a tough one - considering the blurry definition of "grocery item", they'll end up with a lot of frustrated customers who find they need a premium upgrade for the privilege of buying from Amazon. For example, you can buy a Philips electric razor through Amazon Prime, but refill cartridges are only available through Amazon Fresh. The result: I made my first online order with Walmart and will probably make many more in the future.