It certainly feels like the K599 shares a ton of DNA with the Redragon K596 Vishnu, which was an uncommon take on the TKL form factor with a few extra keys. This is more of the same, with a 70-key, 65% form factor that adds an extra column, and increased aftermarket keycap compatibility while at it. These alone merit interest in the keyboard, and the $53 pricing is also the worst-case scenario given you can often find it at a 10–20% discount, which makes it a sub-$50 keyboard.
Pricing certainly helps mitigate some of the issues I have here, with a budget Redragon clearly had to hit. As with the K596 Vishnu, you have a single switch option that isn't very good compared to others, a re-skinned software experience which is hit or miss, user-swappable switches that are more about just replacing dead switches than customizing your own set, and even stock keycaps that are generally well built, but then go with a divisive font and have opaque, laser-etched legends. This is certainly not a case of too good to be true, with almost every feature a compromise of sorts. But the pros outweigh the cons to where I am happy to recommend the K59, though I do want Redragon to slow down and polish their products instead of churning them out at such a fast pace.