Nick I looked up The MI trailer sales. They are selling a light built trailer. The frame and hitch are not near as heavy as most in the market. I would be real careful of getting one. I would not want to haul near the rated limit regularly on them. I am sure that the trailer would not hold up under regular heavy use.
If your working with a set budget then look for a good used trailer that is better built. You will be better off in the long run.