I had bought OFP awhile ago, and knew getting the Gold Update was just the patches, plus a new campaign. Hense the small $14 price tag.
Not that I did much more in the original game than the "Bomberman" mission and just had a riot sniper mode'in the camp from the hill.
Still, the Gold update saved me lotsa patch update headaches, supported a company I felt deserved it so they can develope more, and important to the upgrade, included the Prima Strat manual. It walks you through each mission from the original campaign to a small extent, but enough to get me interested.