Reddit.com/r/mechmarket often sells diy builds. I bought my dactyl manuform there.
Personally I’d suggest to go moonlander first, as zsa has built really great graphical configurator. Standard qmk graphical configurator is awful and you’ll almost immediately fall into code.
Keebmaker make a few of the cooler ones off the shelf (ferris sweep, sofle, corne. I've heard rumours they'll make you a kyria but it's not on their site).