That one is probably worth a few mil or more, those are kinda hard to price though, since they are all different and there's really no way to tell which one's people will like.
Pretty much all AOS roses are worth at least a few hundred thousand, the better the name the more their worth. And of course if you find one with a current players name, the person will usually buy it for quite a bit. One rose with the name Angelica on it sold for over 100 million about a year ago because there was a bidding war between a player named Angelica, and someone who had a dog that was named Angelica.