What's your inseam length? If it's less than 32" there may be something worth looking into if you need an inexpensive folding bike... a Miami Citizen. IMHO it's a fairly modern equivalent to the old Raleigh 20 but with a few advantages in some ways. It folds better than a R20 and my last one came with a very positive and sure locking mechanism that held the two frame halves together while folded. But it's no featherweight (like the R20), has a steel frame (like the R20) and has 6 speeds with a decent gear range to maintain a decent speed (just as long as you don't intend to join a paceline). From my experience of owning two Miamis is that it's biggest weakness is the slop in the aluminum hinge of the collapsible steering mast. It's not dangerous by any means... just annoying. Another thing that really surprised me about my Miamis is that they are very stable at speed... no hands riding is effortless.