When you guys learn to understand the GE, then tell him he has no chance. What he is doing is GE arbitrage. By putting in the highest just 10 seconds after it updated, he has the 2nd, if not best offer in the GE, and if any claws sell in the GE, they'll go to him first.
After a while however, when people start to update their offers too, everyone will put in for max. These people will then be next in line for their claws (that's if anyone sells).
And, claws ARE put on the GE, because teams at the tormented demon (dragon shard + claws dropper) normally use coinshare because shards are virtually untradeable.
Hope this makes it slightly clearer.
¬Albal