CraghawkThe "Black Cherry Profile Blank" and "Black Cherry Profile Laser Etched" keycaps are included with the kit. The LightCycle DSA keycaps are the option that increases your invoice price (+$55).
Differences in the keysets-
Material: LightCycle is ABS, blanks/laser etched are PBT (different types of plastic)
Legends: LightCycle have doubleshot legends, while laser etched = laser etched legends and blanks = no legends at all
Profile: LightCycle is DSA so they're flat from row to row (which makes for easier swapping around of keycaps, a necessity on fully progammable boards like this one). The blank and laser etched sets are Cherry profile, so they're sculpted into an "ergonomic" shape, like a "standard" keyboard (just lower profile than standard).
Color/design: This should be clear from the pictures. LightCycle is a custom keyset designed by @evangs (I believe), while the laser etched and blanks are just solid black.