Here is a link to a plate heat exchanger that is on ebay. This guy has a lot of these, also has models that have 15, 20, 25, 30 plates. This link goes to the 10 plate chiller it is listed at $49 bucks with free shipping. With a couple fittings this should work just fine right? I mean its half the cost of a shirron exchanger. Is there something im missing about these? They are stainless steel with copper blazed.