Bike Utility Trailer Recommendations?

I've been toying with a bike utility trailer for ages, but this week I've renewed my interest after needing to put one of my bikes into the LBS for some work to be done, only to realise that the only way to do this was to drive the bike to the shop/pick it up by car (I had to remove cranks/BB etc beforehand).
So I started looking again at trailers, with a view to attaching a bike rack to the trailer for this purpose, but also to expand the load carrying ability of my bikes in general. For example, at the moment my 2.5 year old son can't ride his bike any distance, but we could chuck in the trailer and he can ride in the hamax to the park, unload his bike, lock the trailer up and we can ride around before reversing the process to head home.
I thought trailers would be expensive, but I found a well rated eBay seller doing a folding frame trailer for £70, which seems like a good price, but I have no experience - hence this post
Cheers
Jon
So I started looking again at trailers, with a view to attaching a bike rack to the trailer for this purpose, but also to expand the load carrying ability of my bikes in general. For example, at the moment my 2.5 year old son can't ride his bike any distance, but we could chuck in the trailer and he can ride in the hamax to the park, unload his bike, lock the trailer up and we can ride around before reversing the process to head home.
I thought trailers would be expensive, but I found a well rated eBay seller doing a folding frame trailer for £70, which seems like a good price, but I have no experience - hence this post

Cheers
Jon
Commuting between Twickenham <---> Barbican on my trusty Ridgeback Hybrid - url=http://strava.com/athletes/125938/badge]strava[/url
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My own trailer is a Roland Big Boy 16" which is great for trips to the allotment but not so adaptable and the hitch that came with it didn't fit my bike so I had to spend again on a seat-post clamp. The seat-post clamp now does mean I can easily tow the trailer behind almost any bike though.
If I didn't already have a trailer, I'd be sorely tempted to give this one a try http://www.erde-trailers.com/erde-cargo ... -499-p.asp as if it's as good as it looks in the picture it's great value.
This is the eBay one: http://www.ebay.co.uk/itm/BRAND-NEW-FOL ... 1e6b355efd
I really want to stay under the £100 mark, but was very impressed with all the reviews of the Y Frame trailer.
Thanks
Jon
It wouldn't surprise me if the Skiiddii one is the same as the Erde. Elsewhere it seems to be pictured with the same red/black cover design, for example http://www.ebay.co.uk/itm/130668995779
I'm after a utility trailer that will connect to a mountain bike (This one) https://www.orangebikes.co.uk/archive/2012/g3/
I'm aiming to use it for:
Shopping, tip runs, picking up firewood etc.
Nothing seems to be available second hand so will have to go down the new route, but have a limited budget - are the cheap ebay ones up to the task?
My understanding is for "proper" utility trailer nowadays, get the Ikea Sladda one (130 with family discount, which is free to join). You might have to change the adaptor, but the guarantee is worth it.
Bike 1 (Broken) - Bike 2(Borked) - Bike 3(broken spokes) - Bike 4( Needs Work) - Bike 5 (in bits) - Bike 6* ...