Hmmm, that's an interesting thread... I wonder how I missed that one.
Will be interesting to compare the trailers and pricing. I searched before on Taobao and found a fair few trailers for sale, that looked like they'd do the business. I'd prefer a light smaller trailer that can carry one bike, but also that could be utilised as a general purpose trailer e.g. to carry an item of furniture or two when the need arises. Another reason is I drive a Suzuki Swift, when a cage beckons or is needed.