Higher-end, but possibly a great deal?

Asking price is $980

http://portland.craigslist.org/clc/bik/386823735.html

"PBW folding (20" wheels) bicycle. Hand made Peregrine Bike Works folding bicycle 41" wheel base with Sram dual drive, Cane Creek shock absorber and brakes, Terry Liberator saddle, 20" wheels.

see for more specs http://www.pbwbikes.com/product_info...products_id/32

Modified with a Nitto bar, MKS pedals, and 1.5x20" Tioga Comp Pool slick tires. Fits fairly wide range of riders depending on bar set up from about 5'8" to 6'2". Rides better than a Brompton and folds better than a Bike Friday."