I agree with grayrest. Check in with David at bfold.

To your specific question regarding the Ti Swift from the other thread. This bike is only really available as a custom order. You can order a steel Swift from Story by sending them an email.

The other bikes which are widely available in the US are Brompton, Dahon, Bike Friday, Downtube, Montague, Birdy, Origami. There are others, but these are fairly available and good quality. The budget option among these is Downtube and Origami. Montague and Dahon are the middle range (with Dahon having several high end models too). Brompton, Bike Friday, Birdy are the high end.

There are several others which are available too. The options are nuts... but if you start with the above you'll probably be able to winnow things down to a bike that works for you. Good luck!