PS VITA MINECRAFT Physical Cart Version Rare REGION FREE (Works On NTSC) PSVITA | eBay
Strapping Carts (STRAP-PS) - Product Family Page
Add to cart is not missing, but in fact invisible on the Playstation 3 Store. If you select overview, then navigate up, you can still add things to your cart. (Bug/Workaround) :
PlayStation Store Gift Card $10 | GameStop
Crash Nitro Kart Sony Playstation 2 Game
Vestil Strapping Cart STRAP-PS-HD Steel Heavy Duty Wheels