Chubb locks come in different prefix codes including AVA. These keys can be cut on or off-site depending on the key-cutting company that you choose. Some key-cutters allow you to wait for your keys while others just send them by post.
Cutting Chubb Ava keys can cost around £12 on average depending on the key-cutter that you pick. Big-named key-cutting companies may charge more than what your local key-cutters would ask for.