You can now buy Whole Foods products on Amazon - here are 13 of the most popular items now available online

Whole Foods now sells Amazon Echos in grocery stores. And, Amazon is now selling Whole Foods groceries.

Soon after Amazon's $13.7 billion acquisition of Whole Foods went through on Monday, more than a thousand Whole Foods items were added to Amazon.com.

The previous Thursday, Amazon had announced that, post-acquisition, Whole Foods goods would be available on Amazon.com, AmazonFresh, Prime Pantry, and Prime Now.

Currently, to purchase many of the Whole Foods items you need to have an AmazonFresh membership. AmazonFresh is Amazon's grocery delivery service and costs Prime members an additional $14.99 per month.

New York Magazine's Grub Street noted that the average Whole Foods stocks 35,000 to 52,000 items, so there's still a way to go before you can buy every Whole Food item on Amazon.com.

Here's a sampling of some of the best-selling Whole Foods items available on Amazon as of Wednesday afternoon.