However, I can at least give general advice to be wary of any money-making "opportunity" that requires you to pay them anything upfront in order to participate. This may be camouflaged in various ways to make it seem like you'd be getting something of value for your money, but ultimately this often amounts to an "upfront-fee scam" where the people taking your money actually make most/all of their own money from those fees, rather than from sales of any actual product, and they usually deliver little if anything that was promised in return for those fees.
E-junkie's affiliate system is FREE for affiliates to use at NO CHARGE. We FORBID merchants from requiring payment of any kind of fee for their E-junkie affiliate programs, and we will suspend any merchant accounts in our system who are discovered to be conducting such schemes. Any legitimate affiliate program -- where you resell their products or refer sales to their site to earn commissions or a percentage cut -- should not require any upfront payments to join. After all, if you're supposed to be helping them generate sales and earning a cut of the revenues you generate for them, then why would you be paying any money TO them if you're supposed to be earning money FOR and FROM them?