While $50 for a PHR must seem like a rip-off to most of us here on LPF, it's a steal to the rest of the world. One of the things that makes a business profitable is playing on the public's lack of knowledge. People routinely go to major resellers and pay inflated prices for products that, if they knew where to look, would cost MUCH less. Due to the fact that they don't know where to look, they must then shell out the money to buy the item from someone who does. This forms the backbone of business in a capitalist society, the profit margin. Don't hate these guys for trying to make a profit.
If a potential customer had been drooling over a $2000 Wicked Lasers Blu-Ray and happened to stumble across this guy's site selling the parts much cheaper, then he/she could build their own for a fraction of the price. That customer would buy the parts, build the laser, and go on about their life a very happy customer, completely oblivious to the incredible deals to be had here on LPF and elsewhere. The bottom line is that we here on LPF are spoiled. The prices we pay DO NOT reflect what value others might put on the same item. We're lucky, and we can't expect everyone to sell things for the same prices that we routinely see.