I used to have an iPod touch 5th gen with an AWESOME case. The case was an Incipio Frequency in "obsidian" black. I only buy cases made of TPU material (Incipio calls it "NGP") -- not that soft gel silicone garbage.
Incipio had 2 lines of cases made from "NGP" material. The "Incipio NGP" was as slim as possible, covering all edges and side buttons, without covering the face of the device. The Incipio Frequency was very similar, but had a patterned texture.
I've loved having Incipio NGP cases for iPhone 5c, iPad mini, iPad mini 2 (revised), and iPhone 6 Plus (still using the same one with my iPhone 6s Plus). All were black. All were slim. All offered just the right amount of protection. Most of them offered decent tactile feedback for the buttons, and all were absolutely great after I used a razor blade to cut along beside the buttons (a routine case modification for me now).
I loved having the Incipio Frequency for the 5th gen iPod touch even more than my Incipio NGP cases. The buttons had amazing tactile feedback, even with no modification. I sold both the iPod and the case to someone here on AT forums. I originally bought the case for $20 from Walmart, then returned it for a refund after getting the case for less than $14 on Amazon.
Well, I now have a 6th gen iPod touch and I'm trying to buy a case. A case for a 5th gen iPod touch should fit my 6th gen just fine. Checked Walmart, Best Buy, Target, and Office Depot. Most retailers only have bulky high-impact cases (Otterbox, Griffin Survivor, etc). The other options are terrible and RIDICULOUSLY overpriced.
So the Frequency and NGP were never updated for 6th gen iPod touch; but that's no big deal because any case for 5th gen iPod will fit (the case will have an opening for a loop strap connector the 6th gen iPod doesn't have, but I don't care). Well, the black version of the case no longer exists. There are 3 or 4 absolutely horrendous colors available, and all are overpriced. I just can't pull the trigger to buy a pink or teal case and pay $22+ for it. It seems like Incipio and retailers are erasing the fact that a black version ever existed, even though I've personally purchased it from 2 different retailers before.
Gah! It's driving me insane!