Depend on what you want to use it for... there's mountain bike,
road bike, racer, etc. A good one can easily cost few thousands
whereas a cheap one only $60-70.
And there's also foldable bike if you plan to travel short
distance to mrt station etc.
For beginner, maybe just get those cheap ones. But try to get a
good lock as there are many bicycle thief around (lost 3).
