I'd lose the $47 value part as well as the first 100 callers limit.

Those things just give people more reasons to be skeptical.

They may start to think..."Why would anyone give away something worth $47?" "Why bother, 100 people have already called?"

You don't want them thinking...you want them dialing.

You simply want to pique their interest to the point they pick up the phone.

Perhaps give the report a title that builds curiosity.

I don't know...maybe the scarcity tactic would work. I'm just not sure it's the best route with a free report. WORTH TESTING I SUPPOSE!