"contact a 135 company that has a SIC program and get your hours with the company that way"
I don't know. Paying to build time in a seat that should be an entry level job for some guy isn't looked upon to well in the industry. If it's a seat that would normally go unoccupied, then I suppose it's no harm, no foul. Though many would question the legitimacy of the time.
But if it's a seat that is a required crewmember, then paying to do the job is hardly helping to raise the bar for the profession.