In the age of PMPs and what not, those long down and out âcassettesâ plan to make a comeback. Eyeing your pocket in the form of a wallet, these cassette wallets, depending on the color combination, sell for $39 to $43. Thanks for the idea! I got lots of them lying in my junkyard, rather put them to use and see how it works. One final question, wonât that plastic be a pain in the arse?