what's the most goal in your UI kit if to compare with TONS almost the same stuff spreading free on the net??
We are using the latest version of bootstrap 4 and offering a modern design. And the code that we offer is in slim + sass.
Now you have to decide if you think that is worth the money or the other free kits are all that you need.
if it's supported with code besides PSD / Sketch files - then no questions. good luck!
Yes included are PSD + Sketch files. You can probably see more details here: https://www.epicpxls.com/items/epic-rainbow-ui-kit-with-bootstrap-4-theme
Thanks for the good luck