It's not a US company, they are in China. It says this if you go to FAQs and click on 'where are you located?'
I ordered a wedding dress from China. I didn't wear it in the end, but it was nice quality (certainly equal to the mid-range bridal dresses I tried on from labels like Maggie Sottero, Alfred Angelo etc) and I didn't have any problems. I chose a different style and had it made for me in the UK, which was not hugely expensive. There was nothing wrong with the Chinese dress, it just wasn't the right style for me (strapless - doesn't suit me). If you want a dress from China, I can recommend Milly Bridal.
If you want a UK made dress, I used Joanne Fleming in Brighton and her prices are very reasonable. She will design just what you want. I paid £390 for my 50s style dress, but I think her prices have gone up since then - that was 2 years ago. Still not hugely expensive though - and it was silk and fully bespoke.