Why is buying a business visa so expensive? Because it's am illegal visa! A business visa is supposed to be issued by one's employer when one is working in Qatar temporarily and isn't eligible for an RP. It certainly isn't for the purpose of coming and finding a job. The person who sells you the visa either isn't going to find you a job or will "find" you one that turns out to require kick-backs or involves you in some other shady scheme. The final upshot is that if you come in on an illegal status you will have NO rights or recourse here in Qatar if you are blackmailed, cheated or abused. Good luck!
Mandi