I also have an economics degree. And I have 11 years managing a trading desk in options and super crazed equities traders who used the investing axiom: Get a hunch, bet a bunch.
I don't see gold anywhere near bubble levels. I've always been skeptical of gold as an investment in the past. My tune is changing. I really don't see any indication of a bubble at these prices. Gold is considered an alternative investment. When the stock market is doing well, money flows there. When the housing market is doing well, money flows there. When alternative investments are available, precious metals are often neglected, and the pricing suffers as a result.
Currently, the stock market is considered extremely risky and the housing market will surely fall further by at least 20% or so. As debts get paid off and people begin to look for a safe investment, precious metals will be a good vehicle, and perhaps one of the first vehicles that people consider. I firmly believe you will see gold rise to near $3000, possibly beyond, in a bubble environment. And that is a conservative guess. It depends upon what happens to the U.S. economy in the coming months and years.
One of the keys to successful investing is not trying to time the market. Don't believe for a moment that you can buy low and sell high, cuz it ain't gonna happen. If you want to get into gold, spread your investment out over several months if you feel it might drop. If you are bullish on gold, maybe put half of your money in today and half in a few months. Nobody can consistently time the market.
If you think gold is too expensive today, but you want in, you might miss the entire ride by never getting in while you wait for prices to drop. Do not think that you are smarter than everyone else, because you are not. You are welcome to an opinion, but only give your opinion about a 70% weighting.
If your gut is telling you to buy some gold, go get it. Look at the ETFs traded on the exchanges. If you buy bullion, don't deal in anything less than an ounce coin. If you are buying bullion, don't buy rare coins. If you are buying bullion, always take delivery.
Good luck!