Huge? I don't know; I've been playing melee characters by preference for just about my whole D&D career, and I can't remember a single build I've had that required a weapon with more than +5 in miscellaneous bonuses. Pricing for those bonuses scales exponentially, but the actual bonus generally scales linearly; beyond a certain point, you're better off doing other things - like buying more Belts of Battle to switch out as needed, or paying high-level casters to PAO you.