Here's my freshly rebuilt trailer. I have about $900 dollars into it, I use it mostly for the quads and bikes during the summer but it will do in a pinch to get my sled around.
Although, I plan to just mooch of my cousins. One has a nice enclosed v-nose 4 place and the other has a flip up. I would hate to have to use an open trailer in the winter with all the road salt.