Apple makes leather Apple Watch bands of its own, but they're pricey things that cost around a third of what an actual Apple Watch costs. Buy the Hermès version, and you might as well be buying a second watch. There’s little sense in that.
Today on Amazon, you can pick up Kades’ 42/44mm genuine brown leather Apple Watch band with silver trimmings for just $4.99 when you enter the code KADES040 at checkout. That's exactly half off the regular price of $9.99.