I think Disco said his biggest year was 300K. I assume Lee is beating that on his AEW deal.
Honestly, I would call Lee in AEW slightly disappointing. I thought he might be someone who would be into that top tier. But, after watching him, and also seeing how he's positioned I think he's more of the TNT title tier. I don't see him breaking into the Punk, Mox, Bryan, Omega tier.
Hell, of the 4 guys currently programmed together (Starks, Hobbs, Lee and Swerve) I would pick Starks as the guy to break into that tier.