Engel Fridge

The plastic Engel 40L (38L I think) can be had for $699 on sale. If you want the proper 40L steel Engel then you can wait for sales at Rays Outdoors or Anaconda perhaps (or maybe BCF but sales not so common).
Otherwise Tentworld seem to have discounts on the Engels.

Mate the Bushman is really worth a look.

Ended up buying a new Engel from Olbis. Good deal but the salesperson didn't know about any deals until I mentioned that Engel were running a special at the moment. So I got a good selling price PLUS all the Engel give-aways. I found that out after you guys had prompted me to dig into the opportunities. Other brands were tempting but couldn't find any locally convenient suppliers.
Thanks everyone for your help.