I have about 6 but I've cut back to avoid dead weight. I'm curious, has anyone tried keeping theirs with a list price in a reseller and occasionally selling on

I have about 6 but I've cut back to avoid dead weight. I'm curious, has anyone tried keeping theirs with a list price in a reseller and occasionally selling one and to pay for keeping their development dreams (unused ones) paid for? Does that strategy work? Realistically, will anyone come calling?