The Cherry MX Board 3.0 keyboard debuted at $99.99 in 2013 and has had a ~20% price drop in the four years since, along with some silent updates which include an indicator LED color change and a non-detachable cable, and it somehow manages to still not only be relevant, but a decent contender in the $80 price range by offering a few things that keep it interesting.
The stock keycaps are a major part of this, and something that keyboard enthusiasts have been and will continue to check out. It helps add a low profile to the entire keyboard, which then makes it a very good in-between option for those wanting more travel than scissor switch keyboards, but not as much as with full-size, OEM profile mechanical keyboards. You still get the same 4 mm of travel with the genuine Cherry MX mechanical switches, and you can get these in the now-rare MX Black switch option too, although I will mention that this configuration is not easy to find at this time. The KeyMan driver, however perplexing it may be as to why Cherry does not mention it prominently, is also a valuable addition to the experience since it adds more functionality and several customization options at no extra cost.
If none of these features sound interesting to you, then the decision is simple enough - look elsewhere. The PC peripheral market has exploded with thousands of new keyboards that have come out within the last four years since the MX Board 3.0 launched, including some from Cherry themselves. The toughest competition comes from their own customers who offer the same switch options and even more in some cases, as well as from others who have adopted clone switches that are now just as good or even better in some regards, provided QC keeps up. The MX Board 3.0 might as well be a dinosaur in these times, but it is still a good dinosaur.