I wish you luck !! Let us all know if you find a deal someplace. Those EU units just aren't cheap !!!! Even Ebay is hard to find a deal. Maybe you could partner up with somebody ?? Here's an option though..... have a 5000 watt Coleman and I went to a local motorcycle shop and asked if they could build a quiet, efficient muffler. They did...it cost me $150 bucks but I'm still WAY under the cost of an EU and it's almost as quiet.