So how many hours do you have total??? Most airlines require you to have around 500 hours on type, so paying for your endorsement may not be enough, unless you have 2000 hours u probably won't even get on a bizjet and if you don't have at least 4000 no major airline will even look at your application.
BTW, several major airlines such as Federal Express don't look to favourable on pilots who try to buy themselves a job.