They have added "expired domain auctions" to their marketplace more than one year ago. These auctions remain open for 7 days.
You will need an order history with at least 1 successful payment in the last 365 days before you may place a bid.
And when the domain is pushed into the winning bidder's account, the domain will remain in an "auction lock" status for about 30 days.
Dynadot Expired Domain Auctions:
http://www.dynadot.com/marketplace/expired/
btw: dynadot IS JUST GREAT !!!!
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