i am sure that it is mid level quality - and that isn't bad. I don't think that these are long term purchases. Probably last a few years with occaisional travel
my fear of all these medium quality bags is what happens when one of the 4 wheels gets knocked off, snapped and then you are stuck. the wheels just don't seem to be integrated into the overall design, They just seem to be pushed on and "hanging out there"
if you are looking at these types, go to a TJ Maxx or Home Goods in the area. They seem to have brands like Nautica there (I did see them recently). At least you can see the quality and give it a spin (literally)