As to dealer, is Iowa Farm their only one? Never heard much at all about them. Which often means they do a good job.
So far as I know they are the only one in the US. The same company used to have a web store under a different name, but I can't find any sign of that now. If you find them making an offer on the web be sure to call before you buy. I found they quoted a better price on the phone than on their website. Also, they threw in the hose extensions and connectors I needed to hook up to my FEL outlet, which was worth some buck not to mention the hassle to find them.
They were fine by me. But at least one other person have had problems dealing with them.