How to Sell an Unused Google Workspace Subscription with Multiple Seats and Domains?

Hey everyone, I'm shutting down my startup and ended up with an unsued google workspace subscription with 300 seats/mailboxes and 6 months left on the subscription. I've had started setting up infra, and I've there 14 warmed mailboxes across 7 domains, but never really used them feels wasteful to let it expire, for those of you who've been deeper in infra, is there an actual marketplace for this kind of thing, where do you suggest selling this, or I just need to cold DM people for it ?