People asking for disk prices probably have looser standards in terms of UX. That's why it works. Backlinks and an audience who actually doesn't care about UX that much. Doing the same stuff in the fashion industry may not work.
Perhaps the opposite is true. A site like this works because Amazon is poor at finding products, never mind for comparing prices. Even e-commerce sites that filter data in a similar manner (and typically do a better job since they have more complete product details), this site is both faster and makes product comparisons easier.
While it is probably possible to tweak to UX to make it better, I would suggest the success of this site is due to providing a better UX for its target audience.
For that kind of audience, the simple UX of that website is attractive enough.
This site has an outstanding UX for its audience and users. This audience cares about UX. They/ we are not shy to tell you that most current web site's user experience sucks. So it's not a question of "looser standards". On the contrary it's a question of paying attention to your users.