Your basic kitchen store has the highest concentration of pointless gadgetry. Every food type has its very own specific slicer/dicer gadget.
There's the tomato/strawberry corer,
mushroom slicer,
egg slicer (with 3 slicing styles!),
apple slicer,
corn cutter,
bagel slicer.
It's endless. And pointless.
If you don't know how to work a simple kitchen knife, it's time to get out of the kitchen.