Here's how to find them
They always show at least one Deal of the Day on their homepage. If you click on it and scroll down a little, you will see six categories (NFL, MLB, NBA, NHL, College and All Sports). Just click on the orange "SEE ALL ___ DEALS" and you will see all the collectibles in that category. Not a bad place to look for autographs.
Checkout the Deal of the Day at SportsMemorabilia.com