Just a small note - the model you have stated is actually the Leopold version that I have with blue/grey keycaps - 104UB-KB45S / XF140S. It comes with no additional accessories.
Your Ducky, as in the picture is the XF01RS / 104UB-DK45S, and has the white keycaps, and comes with the additional accessories you have pictured (keycap puller, red caps)
. It is otherwise the exact same board - made by Topre, distributed by either Ducky or Leopold.
It's fantastic, but 4 years of TKL has trained me to not use the tenkeypad, so it goes unused
). I will probably be getting the 30G Ducky version (104UB-DK30S) at some point in the future to compare and contrast how superlight Topre is.
Enjoy your new purchase!