On a 6 months tour (trains, buses and bikes) with the wife in South East Asia, we recently bought in Thailand 2 Chinese made folding bikes, 6 speed for moving around the places where we stay.

One is a used Yeah (http://www.yeahbike.com/) similar to a Dahon Boardwalk for US$120.
The other is a new Oyama (http://www.oyama.com/) for US$200 visually similar to a Dahon Mu P8.

We ride between 100 to 200km each week on tarmac and unsealed roads.

While certainly not high end bikes, we are satisfied with the overall quality for a price that lets lot of room to buy better parts or accessories if needed.