Dear Leehai,
It is good to hear that you have decided to take up astronomy as a hobby and have decided to pick up a dobsonian. I am not sure if this is suitable for you, but I have this 4.25 inch Edmund Scientific Astroscan newtonian for sale. It is a mini dobsonian in some sense as the scope is en-cased within an ABS hard-plastic shell and the scope is moved by just merely pushing the scope to the desired target. The scope is F4 system which mean the FOV is extremely generous at low power, thus making searching of objects an easy task. The views through it is decent, have viewed M6, M7, venus, Mars, Saturn through it during AGAstro convention and the view is enjoyable. It is also very portable and the unique shape, ease of use, is definitely a drawing point for all users
Do consider this setup if you are on a tight budget.