Lower cost, excellent alternatives are as follows (I still might miss something, so please forgive me):
Zizzo folding bikes:
ZiZZO folding bicycle | Lightest folding bike | Max load 300 lbs
Origami folding bikes:
Lightweight Folding Bicycle & Folding Travel Bike for Sale (origamibicycles.com)
DownTube folding bikes:
Downtube Folding Bikes with suspension & carbon belt drives
These are just 3 alternatives, all providing cost effective bikes, and great customer service. The Origami and DownTube bikes have their owners as members of the forum.