The SRD offer is certainly not a gimmick considering that it does have value. A gimmick is a marketing ploy to get more people to purchase from a certain place in ways that don't offer anything special to the buyer. If I wasn't flat broke due to Christmas, I'd take them up on it in a heartbeat and likely pick up a nice Bismarck.

That said, I don't see how Lynn does it. He's already inundated with razors being sent to him otherwise, now he's offering free honing if you purchase a razor this month! It's a very generous offer and will definitely take up a lot of his free time.