I'd say there is a loose relationship between weight and quality. My Oliver is much heavier than a comparable molded fiberglass trailer. It has a thicker, stronger hull, a beefier frame, springs and axles and no plastic hardware to be found.
Lots of people think price gives you an idea of quality. This is about as false a logic as you can get. Some manufacturers just mark them up because of fancy finishes, electronics, or their past reputation. Granted, quality does cost money. Money in labor, and money in high quality parts. So you need to look to see if you are paying for that, or you are just paying for glitz or marketing.
Not to say a very high quality trailer could be made very light. You could make one entirely of carbon fiber, but I doubt many would pay the cost.
And that really gets to the crux of the problem. Everyone whines that they want quality, but in the next breadth they want a bargain basement price. You can't have it both ways, I've found.
Regardless, what I see is that very few people actually take proper care of their rigs and then want to complain that they don't last forever or have good resale. You can't just park them in storage and let them rot. They all need constant care and maintenance if you want them to hold up for the long haul.
