Prefab house/cabins?

Anyone have any experience with prefabricated or kit homes/ cabins? I was looking around and found one website where it is fairly cheap to do, no more than $6,000, some were even less than $2,000 for a 300+ square foot cabin. I would consider this as a permanent residence.
http://www.panelconcepts.com/products.htm

How long do they last? It seems to me that it will take a lot of headache out of building your own home. Or other than collecting scrap/re-usable material to build a home.

I didn't read the website but here's my thoughts on kits anyway. They don't include ground prep, and most don't include wiring/plumbing/flooring/insulation, etc etc etc.
I almost went for one, and the guy who ended up building my house did the math and proved to me that the kit company was charging a premium for lumber.
I did much better by sending materials lists to all the local suppliers and taking best prices.
If it's a "to lock up" kit, basically the home hasn't even been started yet- it's just roughed in. There's a lot more to a home than the walls/roof.

fireweed farm wrote:
I did much better by sending materials lists to all the local suppliers and taking best prices.

That is a good idea, thanks

Have you tried sunlinemesh.com, they all have what you need, there is also DIY home kit for you home repair needs. Their main product is the alkali resistant fiberglass mesh, which help every homes durability and strength when use in walls, ceiling, flooring and even exteriors of the house.