I am not crazy. This is supply and demand, basic theory for free market. There are serval guys want to buy it. I am the only one supply it.
Here I quot from 风向标 "高价购买《冲突的战略》!20金币购买诺将得者谢林《冲突的战略》中英文版。"
If people do not understand it, how and why you study Economics????
Second, don't you find some people in this web abuse the rule "not repost something alreay post". If person A bought something from person B for $50, and then resell it for $10. Who will be worse off? Person B. How to solve this problem? One way depends on 版主 - incredible pushment: anyone resell other's poster will be banned for this BBS. Or second way, sellers protect themselves by put very high price for buyers. Hence, buyers won't be able to resell it, even they did, they won't be recovered from it. Since there is a trade off between price and quantity.
Third, it is 版主's problem. I posted a lot paper which could not be found in China, but I did not get any benefit from it. I am still poor. I need do something for myself.
Suggestion: If you want to be a good Economist, you need to think economics all the time. Not just for your bachelor, master or doctor degree; passing exames; or big scholarship..... That's the difference between true Economists and "laymen" or "Economists".