Brazilian manufacturer of high-quality leather phone/tablet/MacBook cases, Vaja Cases, is having another 30% off promotion for the North American Labour Day weekend. The code also works on items already on sale. Offer ends 4 September, 11:59PM Brazilian time, which I think equates to 12:59PM on 5 September for us.
Yes, they're not the cheapest around, but they're probably the best quality leather cases available and will probably outlast your device. The discount will likely cover the shipping and still give you a bit off the price, too.