What kind of bike are you looking for? What do you consider cheap? I have a 2006 brand new cannondale cyclocross bike that can be ridden on the road, fields and most trails. Its 52 cm. Its a great bike for someone who wants to ride on varied terrain. I am selling for $900 with new egg beater pedals included. I'll ship in the US for free. We have the same inseam so it would probably fit you. It has a women's racing saddle but you could easily add a comfort saddle if are riding for just fitness.