First thing before buying a mkb is check the layout, see if it's a standard layout. If it's like those 'gaming' layout on the spacebar row, you'll very likely to run into issue fitting aftermarket keysets on it (the keycaps won't fit on the spacebar row).

If it's a standard layout and all good, then it depends on what type of keyboard you're using, backlit or no backlit, Cherry mx stem or mx clone switches. Usually doubleshot keycaps don't support backlit but iinm i've seen some that actually support backlit. ABS, PBT, POM, just go read up. Most common and cheap keycaps are laser etched, then some use pad print, some use dye sub. DS and dye sub won't fade over time.

Keycaps got various profiles, OEM, Cherry profile, DSA, DCS and etc.

I'm too lazy to carry on explaning. You should just refer to the first post posted by TS. It explained all that I said.

Happy hunting and hope you join the mkb club soon.

Oh, about where to buy keycaps, you can try asking ultimatezone, they carry Vortex keycaps (OEM profile). Then look for GMK or BSP if you want cherry profile, but those usually cost you a Filco to get it. Then lastly try finding on taobao.

KBT race seems to have pretty weird arrow keys. Filco, good choice

I think you can get o rings from TS's store, link in his siggy.

hi
going christmas soon
plan to get a mkb XD
last time say get till now
really gg > <
where got promotion on mkb XD

no need groupbuy, some sellers here have ready inventory

i have one alu filco thinking of letting go 
pm me if interested yoh

one with original filco keycaps another with taihao [attachmentid=5414519][attachmentid=5414520]

Hello mechanical keyboard sifus, i have a question . Why is nobody selling TKL Ducky Shines in Malaysia?Ducky Mini has no f1-f9 which is no no for my game,Ducky Zero Shine only blue led no fun Razer Blackwidow Chroma Tournament uses Kalih Switch(i used to have an old Blackwidow with genuine Cherry MX blue, so really can feel the difference in terms of being more solid than these Kailh Switches.CM Storm and Corsair, iono i dont like CM Storm and Corsair design is not nice for me I with people would bring some Ducky TKL cause they look so good

Oh?Anyone ever done this can help explain to me the details?

You sure you want to buy from GON? 
Just generally there are many many options out there for 60% pcb.

As for the case, I think they are not going to restock any soon. Btw, someone is selling a Lambo 60% case in MMKB fb page. And not to mention lots of option in taobao. 

Switches, maybe just swap out the blues with a lighter spring? Blues are by no means heavy to me though, I don't like red, too light for me. 

Usually USB and controllers are presoldered or if there is an option, please let them solder for you. You sure you can assemble yourself and not burn the pcb?

what do you think about this one?

how much are you planning to pay for the your custom keyboard project? 
1k, 2k? Tell us your budget and what layout you are looking at.

ah you settled on case, else I can just sell you that one in the picture 

that one depends on your pcb, but first, what case have you bought?