Gaming chair questions

I badly need a new chair.

I put the thumbnail chair there just for fun. It's called the Vantum and it's ~$700. I don't need a Cadillac chair. A Honda is more than adequate. I just don't know what that'll cost.

1. What's the absolute minimum you'd spend to get a Honda chair? $100? $200? More?
2. What brands have the best reputations?
3. What brands should be avoided?
4. What questions am I forgetting to ask?

Herman Miller and Logitech G Introduce Vantum, a Modern Gaming Chair Designed for Gamers From the Ground Up

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The cough backstory

The plain-old desk chair I bought just 14 months ago already has a serious crack. I noticed it today. I don't think it can be repaired. Plus the crack will expand making the chair worthless. It's just a question of how fast. Worst of all - could the chair collapse all-of-the-sudden sending me crashing to the floor?

Before I bought it I avoided the cheapest chairs. I spent a bit more - $80 - in hopes the damn chair would last at least a couple years. So much for that!