Buying a job and building time with your own money are two entirely different things. On one hand, you're investing in your self (ie your education, experience and skills), on the other you're just undercutting others.

IMHO, this is one reason I support these cargo FO programs, no one is losing their job to you, and you're just buying time that you would have bought splitting time anyway. You've saved money and reduced your carbon footprint by doing it on scheduled flights rather than splitting time with a buddy in a rented twin.

In the end, going into an interview it is what it is, time you paid for. If you work hard, get the experience, and hone your skills, you'll come out of it with good references too. You can't buy that part.