OXO Good Grips Citrus Corn Prep Peeler $4.00 + Delivery ($0 with Prime/ $39 Spend) @ Amazon AU

cheapest as per CCC

Peel Citrus Fruits Comfortably And Rub Peel
Compact Design For Effortless Peeling
Fits Any Handle
Sharp, Durable, Japanese Stainless Steel Blades Won’T Rust

The specially designed blade quickly and safely zips through corn
Y-shaped corn stripper makes removing corn kernels easier than ever
Body of the peeler is made from durable and lightweight plastics
Shark-jaw style blade made with quality Japanese steel effectively gets under kernels to remove them cleanly