If you want premium features such as lightweight, collapsible and incredibly strong you do have to spend a fair amount of money for a well built and chew proof crate. This could be seen as a worthwhile investment especially as the life of your dog last many years (hopefully). If you are willing to make a few sacrifices and your dog is not exceptionally strong or aggressive then some cheaper heavy-duty dog crate alternatives will perform the same job.
Also, the crate is made out of plastic, which is durable and washable. The darkness inside the crate makes it an appropriate bed to use if your dog has trouble sleeping, with one commenter noting that it was capable of housing her dog as though he had a little den. This kennel is also good for dogs that fancy themselves escape artists. The heavy duty fasteners on the kennel, locked door, and thick outdoor posts prevent them from getting out on their own accord.
SmithBuilt is one of the most renowned manufacturers of extra strong metal dog crates – they’re well-known for the comfort and security of their models. Those looking for a reasonably priced indestructible dog crate should consider their newest product, the SmithBuilt Heavy, as it offers good construction quality, a convenient 2-door design, and a removable pan for easy cleaning.
Addendum added January 28, 2013: My vet had never noticed these carriers because I had never put one up on the exam table until my last vet visit. She looked at it with interest and totally concurred with my opinion of having a small, but open carrier for my two (panicky) cats. She has seen more than a few overheated pets in too enclosed carriers. Since I live far from the vet I always carry spare towels for the bottoms of the carriers and she found that the "stable floor covering'* I use was an additional comfort feature for my pets long trip to their appointments. (I just ordered the larger size of this carrier for my "Phat Kat" and will donate her previous carrier to our local animal shelter.)