I don't know about where, but the best sledge I have ever owned is this one:
It says Delta on the back and it's the fastest thing on no wheels, takes major punishment too, I've landed it off some incredibly heavy jumps. I've also been rear ended when stationary by a wooden toboggan carrying a family of 5.
we have one the same but blue
wife says it was bought from woolworths some 5+ years ago.really nice plastic not the crap cheap rubbish that shatters these days

