Yes, it is well worth it since it evolves into the Mighty Haxorus. But if your Axes has Rivalry, it is not worth having and get one with Mold Breaker to take advantage of its Earthquake. It also has one of the highest Non Legendary Attack Stat of the whole game. Here is a Moveset for it that is great:
Dragon Dance/Swords Dance
Overall its a great Pokemon and I recommend it. It learns powerful moves to take advantage of that high Attack stat. Hope this helps...