Have no idea if the machine is decent or not, but would advise against the setup if you want a machine on a frame. You should look at machine with a taller and wider throat, and that is going to be a very big issue if you want to quilt more than baby sized quilts.
This setup will allow about a 4" wide quilting path per pass - and as you get farther down the quilt with more rolled up under the machine, it may get to the point where about the only thing you can do is a slight wave or straight line.