These auctions are sold to other domainers at a giveaway price. No end users here. Someone needs to set up an invitation only auction in Las Vegas for end users and not us squatters.
If you know the client then check how much they are worth and sales earnings. Then price the domain accordingly. Or check the domain in the Godaddy appraisal tool and multiply that price by 10x. You can then negotiate a sale price from that...