Yes, you can buy a replacement set of (physical) print Discourses for a years you've previously purchased, at the replacement rate of $50.
Note that as long as you're an active MSIA student, all years of Discourse you've previously subscribed to remain accessible to you in the Student Download Center and the MSIA mobile app. An Active MSIA student means you have an active primary subscription to Discourses or SAT Series if you already completed the 12 years of Discourses.