I'll disagree with EventServices a bit. A few years ago, my wife got me a coach as a Christmas present. It ended up being about $1800/yr and I was riding 8-9hrs per week on average. That year was the fastest I've ever been. I dropped the coach based on the expense, and now often regret it.
Really just comes down to how much disposable cash you have. If you can afford it, and have the time to make it worthwhile, go for it. You'll get more out of it than a set of deep carbon wheels.
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“Courage is going from failure to failure without losing enthusiasm." (Churchill)
"I am a courageous cyclist." (SpongeDad)