Discounted Gift Certificates: As of this posting, High Gravity Homebrew is giving bonus gift certificates based on how large of a gift certificate you purchase.
$67.50 gets you a $75 Gift Certificate
$90 gets you a $100 Gift Certificate
Since you can use gift cards on anything, this amounts to a back-door sitewide discount. This includes lines and products that typically are not discounted like Blichmann Engineering, Anvil Brewing, Spike, Wort Hog Gear – Review, Tilt Bluetooth Hydrometer – Review and more
Note that no product is directly discounted.