The laws of business are the same whether it be higher end or lower end. You have to find the right product and the right market. Anything other than is a bad investment.
If you can't find anybody to buy your million dollar product, it is a bad investment.
If you enter a flooded market and expect to break even, it is a bad investment.
Lesson? There are no sure things in business. Except one. Just as you're trying to get the most out of someones pocket, rest assured they're trying to do the same to you.