Grand Theft Auto IV DLC As Boxed Product?

Well, sort of... GameStop have a product listing on their website for GTA IV: The Lost and Damned for $19.99 but you'll still have to download it... from the site:

Grand Theft Auto: The Lost and Damned packaging will include a 2 sided poster and an Xbox LIVE Marketplace token card. The token card will contain a unique code to purchase The Lost and Damned over the Xbox LIVE Marketplace.

Runs with a copy of Grand Theft Auto IV on Xbox 360

No disc included in packaging – Downloadable Content Only

Must have an Xbox LIVE account

Consumer Return Policy: Enclosed in each package will be an Xbox LIVE Marketplace token. This token will have a tear off strip that reveals a unique code to download the content over the Xbox LIVE Marketplace. Once this code has been exposed, the downloadable content has been potentially accessed and can no longer be accepted for return.

Source: GameStop