First off, you have no idea, and will never have any idea, of what the margins on the ipod are, because you don't know what their R&D, manufacturing, shipping and marketing costs are, per ipod. Even if you did, and Apple was charging five times what it cost them to make it, guess what? You don't have to buy it, and there are competitors that you can buy from. The reason that they're "not doing so well", as you ambiguously put it, is because those products SUCK, compared to the ipod, not because Apple has some sort of imaginary partial monopoly over the mp3 player business.
Well, this gives me some idea:
Apple's 3rd Quarter profits.
Granted, I don't have the specific values for each product, but a gross margin of 36% sounds pretty good to me. If that's the average, I think we can safely assume that the new nano, which costs less to produce than the older one, has around a 20% margin AT THE LEAST.
How is Apple ever going to have no competitors in the mp3 player business? Any tech company is free to create one and sell it, at any time. Applying the principle of price gouging to ipods, legal definition or consumer definition (and "consumer definition" sounds a lot like whining customers saying "hey I paid $600 for this iphone 2 months ago waaaah!"), is ridiculous. You don't like the price of the ipod, or how much money Apple is making on each ipod? No problem, DON'T BUY ONE. Oh, you NEED an mp3 player? (you don't, by the way) Fine, buy a cheaper one from a competitor.
Ok, this is my last word about price gouging. If you had been paying attention, you would have seen that I stated, three times, that Apple isn't price gouging. What I said was, the potential for price gouging is present, though I doubt it will materialize.
pricing above the market price when no alternative retailer is available
This means, that if the iPod were to become the only MP3 player in the future, and Apple decided that this meant they could charge $800 for one, that Apple would be guilty of price gouging. Do I think this is going to happen? No. There is enough competition where this isn't likely to happen. But, people have thought that about other industries in the past; oil (how do you think Rockefeller made his money?), phones (remember when all there was was ATT?), and dozens of other industries of the past have been able to get away with similar actions.
And stop crying. Or move to a truly socialist state where prices get fixed by government and the economy eventually gets run into the ground. I'd prefer you did the second one, but I have a feeling you'll do neither.
Your laissez-faire attitude is fine, in fact, I like it when government stays out of business, but I don't want to be a stoic spectator; if something begins to go wrong, I would like to be able to help correct it. Now, that means, that as a consumer, I have a duty to challenge anything which I percieve to be a threat to my position in the market economy; just like Walmart challenges unions or healthcare reform

. If that isn't playing the game of economics to you, then you need a refresher course. It's our duty as consumers to look after our interests, not corporate interests. You may think I'm whining, or "crying" but this is part of the process which keeps certain prices low in our economy, and certain industries in check.
And, if you think that complaining about economics (which I never did by the way) is unpatriotic, then go and read that tiny little thing called the First Amendment. You'll find all kinds of interesting stuff in there. Seems the framers thought it was just mildly important.