KaTom Restaurant Supply has the Polar Ware 361BP kettle for $174.87 + shipping (http://www.katom.com/002-361BP.html). The 361BP is made in the U.S. and sports a U.S.-made ball valve, which is a killer deal at $174.87 because everything else in this price range is made in China. The optional Howe-manufactured Polar Ware 5015 thermometer can be had for $17.78 (http://www.katom.com/002-5015.html). Howe charges $50.00 for a non-OEM version of this thermometer on their website.
I owned an older incarnation of the 361BP kettle back before I took an eleven-year hiatus from brewing; therefore, I naturally migrated to the 361BP when I recently decided to re-enter the hobby. Unlike a fuel wasting keggle, the 361BP will pay for itself over time in fuel savings because it has an efficient one-to-one height to diameter ratio (i.e. it was designed to boil liquid, not serve beer). The latest incarnation is even nicer than the old version of the brew kettle in that the 1/2" ball valve nipple on the bottom has 1/2" NPT female threads on the inside of the kettle, which allows one to install a boil screen. One had to use a false bottom that sat above the outlet on the older version of the kettle if one wanted a boil screen (I use whole hops).
With that said, I believe that the 361BP is not long for this world; therefore, if you think that one may want one of Polar Ware's American-made kettles, now is the time to place one's order. Polar Ware was recently acquired by Vollrath. It looks like Vollrath is planning to use the Polar Ware brand name to sell import restaurant kitchenware, stock pots, and brew kettles (the economy Polar Ware kettles that are in most homebrew shops today are imports). I owned a Vollrath 10-gallon kettle as well, but I had to pay someone to weld a nipple onto that kettle. Polar Ware was the first commercial-grade stainless steel stockpot manufacturer to offer pre-built brewing kettles. Unless one moves to brewing bigger batches or takes a break for the hobby and sells all of one's gear like I did, the 361BP will be the last kettle that one will need to buy; therefore, heed the old adage and buy once, cry once!
By the way, never purchase a high-quality stockpot from your local homebrew store. Restaurant supply houses are a much better source for commercial-grade stockpots. The 361BP sells for $300.00 in my local homebrew store. KaTom is selling the same product for $174.87. That price delta represents a $125.00 middleman markup.