I see nothing that says it is a scam. It could, however, be stolen.
It would be a scam if they sent you a box with 7.2 lbs of rocks in it.
Given that the shipping company is acting as a sort of escrow agent for you and the seller, I wouldn't be too concerned about getting a MBP box filled with rocks. I would be a little concerned that I may be receiving stolen property. If you're not satisfied, you DO have 5 says to return it.
FWIW, Royale International is not some fly-by-night company. Contrary to what others may believe, Fed-Ex and UPS are not the only shipping companies in the world. It's a big globe, guys ... Try to expand your minds a bit next time.