There is no bey called Bronx River. Its real name is Obsidian Shell 4-60D, and it should only be around eight to ten bucks. Whatever the heck this is is ripping you off. Both beys are pretty mediocre by modern competitive standards, but honestly the six-year-old probably isn't going to care in the slightest. If he asked for those two specifically, then he'll probably like playing with them more than if you got something competitive that he maybe won't like as much. Out of the two, I'd lean more towards Fort Hornet, since it's a much newer and better release with a couple of pretty good parts, even if the main part of the bey isn't as effective as a lot of other options out there. By comparison, nothing in Obsidian Shell is worth picking up--really, the only reason why you would want Obsidian Shell is if the kid really likes turtles...in which case absolutely get it because who cares if it doesn't win battles, it's a turtle, dammit! ...that being said. If the kid doesn't really care for any particular animal and you want to get him something really cool, consider the Blast Pegasus Clip n' Rip set. It's brand-new so the kid probably doesn't have it yet, comes with a more powerful launcher that has its own built-in-storage for a bey, the bey itself is a pretty competitive part, and its central gimmick is that it speeds up mid-battle. And it works. It's freaking awesome. (Full disclaimer: Blast Pegasus is my favorite bey of all time.)
