In my experience, the quality is similar to other popular brands (progressively more cheaply made, but good enough). For smallish aquaria (up to 55gal), I consider them just fine. The price is a bit stiff but I don't know prices of new tanks. I have always bought used tanks.
Price is usually relative, depending on locale and other factors. For instance, depending of where you are (US or elsewhere), frequently there are good deals around thanksgiving and other major holidays.