I just discovered them the other day and while I haven't bought anything yet, it's just a matter of time. From what I can tell, they sell crafting closeouts and discontinued lines. There's a new offer every day though you can still get a few of the older offers that must not have sold out. They offered MME's "Stomp" a few weeks ago- wish I'd known about this site before I bought the line from someone else for a higher price!
Right now they're giving away a prize for sharing them- they have a FB page, blog, twitter, email alerts. I get the email on a daily basis and subscribe to their blog. Have a look!