Have to A/B test. PPC you get small money without a conversion needing to happen. Affiliate model can reap higher income but only if conversions are there so basically sending traffic for free on hopes of a sale so that decision depends on average conversion ratio. If the affiliate program converts and has nice landers then usually affiliate model will trump, gotta peep the affiliate process click through and ask would I buy this at this price, is the lander optimized etc... Basically don't send your traffic away for free to landing pages that have an overpriced product or that suck and aren't optimized to convert. If you're creating your own pages for the affiliate program same shit A/B test to see which page setup brings better conversions. Personally I use both models depending on the project.
