For that price range you will have to build it yourself. I have built a couple different ones for myself using 3/4" plywood and galvanized trim. The one I have now has small fans running off of a Marine battery. I am building a new one this summer and plan to use the automotive readiator fans that someone posted here to move the air. It stays cool enough even during the heat of summer. If you are good with a skil saw, router, and tin snips its not too hard. They are definetly heavier than an aluminum box. If you take your time they can look pretty good especially trimmed out in metal properly. If you want some pictures of what I have now I can take some, it may give some ideas though I will be changing a few things on the next box.