Amazon with Moonster Products has the moonster Handmade Full Grain Buffalo Leather Kindle Case for $17 - 40% off coupon (check "Save an extra" box) = $10 with free shipping on $25+ or with Prime.

Compatible with Kindle 4th, 5th, 8th, 10th & 11th Generations, Kobo Aura & Kobo Clara & Nook E readers, Kindle Paperwhite (all generations), Kindle Oasis, Kindle Voyage & Kindle Touch.