It seems that these supplies fit the bill for our chargers. Here's a few links to some of the threads where fellow Ezoners have used them.
Power Supply (12V@13A) for Triton and other chargers
120vac to 12vdc 13amp power supply
If you do a search on power supplies, you'll see they are always mentioned as a low cost alternative.
I've taken their advice, and ordered one off Ebay on Sunday. I'm going to try it out on my new Triton. I'll let you guys know how it works out.
At these prices, it sounds like a heck of a deal.