If you own an older Waves bundle (v9, v10, v11, v12), you can sometimes get v13 for during Waves’ "grace period" or "Waves Update Plan" promotions.
While itself is a paid update for the comprehensive Waves Complete collection, Waves offers a specific Free Plugin Pack that includes several high-quality tools. Additionally, users with an active Waves Update Plan can often upgrade their existing licenses to V13 at no extra cost. Key Features of Waves V13 waves 13 bundle free