So is mine... was about $260 ish back then I think.
Just had a look at it now I'm home...
http://www.doss.com.au/pf18-18l-port...idge-dc12v24v/
I've not used it to freeze anything but set it at -10 for already frozen goods when shopping and +2 for drinks etc (and put fruit in the dinky front bit) when touring.
Ran it for 3 weeks solid for the "Meetup in the middle" trip no wuckas