It looks like the biggest leak of the Play Store's soon-to-launch gift cards may be coming from Google itself. A support page showed up in search indices (that has now been pulled) which confirms the cards will be US-only at launch and will come in $10, $15, $25, and $50 increments. Through some Google-fu, we've also learned your Google Play balance will have a $2000 limit and cannot be used on subscriptions or devices. So, sorry about your plans to buy a hundred $50 gift cards and then buy 25 Nexus 7s. That's forbidden.

Below is what we've been able to piece together of the currently-unavailable page. Obviously, this is incomplete, but it does contain some interesting info. Keep in mind this is coming from excerpts of removed caches, so it is possible that this info could have changed between the time it was originally posted and the time the gift cards launch. Of course, since much of this info is tied into how gift cards will operate, it's unlikely it will.

Google Play gift cards are available in the United States in the amounts of $10, $15, $25, $50. To find a retailer near you, visit play.google.com/about/giftcards. Any gift cards you redeem will appear on your account as part of your Google Play balance. Note that the Google Play balance has a $2000 limit.

How to redeem. You can redeem your Google Play gift card four ways ways: At play.google.com/redeem

On the back of your Google Play gift card, SCRATCH TO REVEAL CODE. Visit play.google.com/redeem and enter the redemption code found under the scratch-off section. Once you've entered a valid redemption code, the value of the card will be automatically applied to your Google Play balance, which will appear as a payment method when you go through the purchase flow on Google Play.

While making a purchase on the Google Play website (play.google.com)

Ensure you're signed in to your Google account, and select an item to purchase*.

*Note that Google Play gift cards may not be used to purchase subscriptions or items from the Devices section, including accessories (chargers, covers, etc.).

While making a purchase using the Google Play Store app on your device. Open the Google Play Store app on your device, and navigate to the content you'd like to buy; Tap on the item to see the details page; Tap the blue box that lists the item's price; Tap the gray drop-down arrow to see a list of payment options; Select Redeem; On the back of

And that's all we've been able to find. Emphasis added to highlight the interesting bits. It shouldn't be much longer before the cards are released for real and we won't have to label this information with the "probably" disclaimer anymore.

Thanks, Jason!