I have the Manfrotto Light Duty Grip Ball Head and am looking at buying the Manfrotto 190 Carbon Fiber Tripod with Q90 - 3 Section. On their site, they have the tripod listed weight as 2.84 pounds, which is what I'm looking for. On Amazon's page, they have it listed @ 4 pounds and on B&H's page they have it listed at 2.84 pounds.

Should I be OK with buying it from Amazon and assume that it's a typo since the model # is the same? I'd like to save $20 if possible.