yup i saw that. but its specifically only for the wire basket... reviewing amazon purchases there are some negative reviews since its not a full length bracket that results in unstable footing where the locked down part of the basket is fine but the rest of the basket is actually moves around and isn't stable.

the one they have inside of the topeak bags and on the bottom of the trolley tote is a full length bracket.

now if they only sold a full length bracket... maybe some 3rd party sellers can start doing this and just make topeak compatible bracket mounts.... the sky's the limit from there (practically anything can be securely locked down).