Yeah, there is a reason they are so cheap. They can't sell them because they are junk. It's kind of the whole "you get what you pay for". Save yourself the dissapointment and go spend some real money on a good quality one.
I have one just like that, been using it for 5 years with out problems,I guled all the pieces together with Gorillia glue. Its a great thing to do, or the thing just falls apart. And shooting screws through the feet keep them on