The Silhouette Design Store provides a 'Last Chance Designs' section, which is a collection of older designs that you can get at up to 75% off the original price before they're discontinued.
NOTE: If you have a Premium or higher-level Subscription, all 'Last Chance' designs are free!
New designs are typically added each week as older ones are rotated out, so be sure to check back frequently and grab them before they're gone forever.