Google is taking on Amazon Prime with a shopping service later this year. You know this. TechCrunch is filling in some of the blanks today with more details like pricing (free for Googlers, $4.99 for beta testers, and a final target a little below Amazon’s) and some more beta stores like BabysRUs, Targét, and Nob Hill Foods. Also, don’t tell anyone about it because it’s a total secret! Google HR e-mail below:

Hi,

As you may have seen, there was a leak last night about Google Shopping Express, including several very specific product details. Our PR team is working to quiet this down, but we need your help — please don’t add fuel to the fire by discussing or even confirming Google Shopping Express. If you are contacted by a member of the press, please follow normal procedures and refer them to press@google.com.

But wait, you asked me to ship to my home to help you test … so what about spouses and roommates? We trust your judgement. If your roommate writes a tech blog or works for a company in this space, please don’t ship it home. But if you feel it’s safe, then by all means, we still really need your help dogfooding this.

Get free same day delivery with Google Shopping Express

After weeks of testing, we’re now excited to open Google Shopping Express to every Googler in the bay area including temps, vendors and contractors.

Save yourself a trip to the store and stock up at places like Target, Nob Hill Foods, Babies “R” Us and more. Googlers who sign up early for a free membership will receive free same day delivery for one year! Non-members pay $4.99 per delivery per store.