I hate to say this DHAVAL but it's just the luck of the draw. There is obviously some issues with cracking on this piece. Only you can decide if it's worth the risk. My only point is that you shouldn't be put in this position. It sucks because this is a really good looking statue that you are paying a lot of money for. I have to believe that you and the other collectors who ordered this wouldn't have any problems if SSC hadn't decided to make this an eggshell statue. Skimping on materials to save cost has really hurt this piece overall it seems. The QC issues probably could have been avoided if this just weighed a little more. It didn't have to be solid and clock in at 60 lbs but if he at least weighed about 40 lbs (like Skaar) I would have to believe that could have eliminated the cracking issue. The Hulk Com is another statue that isn't solid but when you handle him he has very nice weight to him and a solid feel to it. He also weighs more than 30 lbs so the hollow parts of it are not as thin as Rhino.
The bottom line is that I'm not surprised to see some of these having cracking issues. A statue as massive as Rhino clocking in at less than 20 lbs just seem all kinds of wrong to me. Hell, I have 1/7 scale Bowen statues that are heavier than that. I can't lie, Rhino being less than 20 lbs would really bother me if I had ordered the piece.