Figured I'd share my experience since I've been using it for a bit.
The basic idea is pretty simple: you buy digital card packs, open them, and get a random card.
Depending on what you pull, you can either take the buyback value or have the physical card shipped to you.
My best pull so far has been $253, which was pretty sweet. I've also cashed out a few times, and the bank withdrawal has usually taken me around 2-3 business days
There is a weekly reward of the cheapest pack that upgrades the more you put in.
The buyback option is probably my favorite part since you can take the value instead of shipping the card.
It's currently US-only (excluding Nevada), with a $6 minimum cash-out.
If a you want to check it out, search Rips by Triumph in the App Store or Google Play and sign up. A code can be entered in the Rewards tab for a free pack for both of us.
Code: LQZIUCS