Reddit mentions of YMDK Double Shot 104 Dyed PBT Shine Through Keyset OEM Profile Keycap Set for Cherry MX Switches Mechanical Keyboard 104 87 61,Sunset Gradient (Only Keycap)

Thanks! Should be this gradient keycap set from amazon. :-)

There's a bunch you can pick with varying quality but I picked these ones.
They were the cheapest gradients I could find and they're not too bad for the price.
The font is similar to the original AP2 font where any characters with closed shapes (ie. 8 or B) are broken up the make manufacturing easier, personally I don't mind but you could spend a bit more the get a font similar to the new AP2 font.
The edges on the bottom of the keycaps were a bit rough but I just smoothed it out with a nail file. If you do this, be sure not to file too much since it's not solid colored PBT all the way through but rather white underneath. It's thick enough that you don't have to worry about it wearing off but be wary.

I have some that are very similar that I ordered from amazon, but it doesn’t seem to be as big of a set as OP has pictured

Link: ATTAV 37 Keys PBT Keycaps Double-shot Backlit Keycap Set for Mechanical Keyboard (Gradient Bluelover) https://www.amazon.com/dp/B01N5PZTKI/ref=cm_sw_r_cp_api_i_WS1TCbAR06NPD

Edit: think I found OPs
YMDK Double Shot 104 Dyed PBT Shine Through Keyset OEM Profile Keycap Set for Cherry MX Switches Mechanical Keyboard 104 87 61,Sunset Gradient https://www.amazon.com/dp/B07GGTF6XZ/ref=cm_sw_r_cp_api_i_FU1TCbECZVTVH

I think the case looks nicer than the stock plastic one plus it matches the keycaps.

https://www.amazon.com/YMDK-Switches-Mechanical-Keyboard-Gradient/dp/B07GGTF6XZ/ref=mp_s_a_1_1?keywords=sunset+gradient+keycaps&qid=1572109063&sprefix=sunset+gra&sr=8-1

These are the ones

Just realized that I put down the wrong link for keycaps 2. Here’s the correct one: https://www.amazon.ca/dp/B07GGTF6XZ/ref=cm_sw_r_cp_api_i_QZdVCbX95GY2D

https://www.amazon.com/dp/B07GGTF6XZ?ref=ppx_pop_mob_ap_share The company sells slot from China it's how I got 75 switches for like 20$ but they do have some good stuff on prime like these keycaps.

https://www.amazon.com/YMDK-Switches-Mechanical-Keyboard-Gradient/dp/B07GGTF6XZ

Hmmmmmmmmmm...okay. Bet you won’t have the patience to read through all this! I’ll be recommending a lot products (want to see how people “build” keyboards?) so try to keep up. For the base and case, get the GMMK full size. https://www.pcgamingrace.com/products/gmmk-full-customized This’ll be your best bet for full size. Then, if you want tactile switches, you can get the Kailh Box Browns among with it. That’ll total up to $95, but unfortunely you can’t use the 15% off code for its only for orders $100 and up. However, if you like pudding keycaps (translucent on the sides for RGB, example image: https://amp.reddit.com/r/MechanicalKeyboards/comments/913pmi/gmmk_pudding_keycaps/ ) then you can order those from Glorious and it’ll total up to $120. Using an affiliate code from anyone, it’ll go down to $102. The reason I’m not recommending the normal caps is because they’re ABS, PBT is generally considered better. But if you don’t want pudding, take a look at the keycaps I got. https://www.amazon.com/dp/B07GGTF6XZ/ If you want linear switches, I recommend Gateron Yellows. You can get them from Novelkeys for $2.40 for 10 of them (you need 108 keys in total) or KBDFans for $2.00 for 10. KBD ships from China, so the shipping cost might not make it worth it. Finally, the stabilizers. The GMMK stabilizers can get rattly sometimes, so you might want genuine Cherry stabilizers. https://novelkeys.xyz/products/cherry-stabilizers?variant=3747938992168 For a full size keyboard, you need seven 2U PCB screw ins and one 6.25U screw in. This made me physically tired, typing on a phone. my fingers hurt.