B&H has the Tiffen 77mm Variable Neutral Density Filter for $69.95 (reg. $129.95) for a limited time. Check it out while it lasts here at B&H Photo.
You can also get the Tiffen 82mm Variable ND Filter for $89.95 (reg. $173.95) here at B&H Photo.
Subscribe to the Photography Bay Deals Newsletter to catch great deals like this and other photo gear deals daily. Sign up here.