It's really a waste of money. The only reason to buy an account is to take part in a signature campaign. As soon as a DT detects that it is a bought account,then it will get a red tag in the trust rankings. This means that it won't be able to join any of the more profitable campaigns.

You'll probably make more by buying some Bitcoin, and waiting for the price to go up. You can then spend your time learning about crypto and blockchain technology here.