I have a Cimmaron. It is a pretty well made pit.
It's 16" in diameter, and is either 1/4" or 3/16" steel. I did make some minor mods to it to even the temp out, as there is a serious hot-spot at the firebox end. Mods were to make a better baffle and add 1/4" steel tuning plates to direct the heat and smoke better. Works pretty well now, but still prefer my WSMs.
$200 isn't bad. Offer less, you can always come up.