None of the parts are exactly straight and the tolerances are about as tight as jello. It feels sturdy enough, though I'd definitely suggest getting pads for the feet if you have hard wood - the protectors it comes with are slightly recessed so the metal of the legs is still exposed.

Do NOT follow the instructions. Put the headboard together loosely, stand it up, then tighten to ensure all legs are flush with the ground. Then lightly attach the rest of the frame (excluding the slats). Once it's mostly put together, tighten to ensure everything is flush with the ground. If you follow the exact directions, the legs won't be level. 

I'd honestly suggest paying for a better quality frame, but if you only have $150, it'll do pretty well.