DK9008 Shine are retailed for roughly $120 in Taiwan.
Looking at the Taiwanese forum, there are indeed quite a few complaints regarding Ducky's quality.
Interestingly though, most of the reports emphasized a lot more on how good Ducky's customer service and return policy is, rather than on the item's problem.
The community seems to unanimously favor Ducky unanimously for first-time buyers.
There also seem to be some form of Topre worship going on there.
Looks like Ducky is using a similar strategy as Hyundai for their products.
Regarding the Filco comparison, I do think the Ducky is a better deal for people with budget concerns. Sure, the quality may not match that of luxury items like Filco, but it is good enough that the performance itself isn't affected. Also, having backlightning, NKRO, repeat rate setting, and winkey lock, the usefulness of these gadgets aside, I think this is already attractive enough to be a no-brainer for first-time buyers. Of course, there is no way the Ducky could beat the no-frills, simple elegance of high-quality Filco, but at this price range, I think features like these that are actually usefu are more important as long as the quality is reliably adequet.