CCC regurgitates Amazon's own customers back to them. PriceZombie tracks prices on 100+ other stores, they have a Reddit bot that is seen by millions of people every day and they have browser extensions that are used by tens of thousands of people every day. Since Amazon usually has the best price, PZ actually steered customers to Amazon. It is against Reddit's TOS to have affiliate links in bots and against the TOS of most retailers to have affiliate links in extensions - so a massive amount of business was pushed Amazon's way without any benefit to PriceZombie.
PriceZombie's failure was in not expecting Amazon to always have the best price. Not all of the online retailers they track have affiliate programs so if a few of them dropped out because they were losing business it would not be a big loss, but with 90%+ of all purchases coming from Amazon, losing them as an affiliate was a fatal blow.
But that is to the PZ site. Behind PZ is a massive, custom coded data retrieval and searchable storage system that contains three years worth of product and price data from almost every major online retailer - both the technology and data is far more valuable than the PZ website.
PriceZombie's failure was in not expecting Amazon to always have the best price. Not all of the online retailers they track have affiliate programs so if a few of them dropped out because they were losing business it would not be a big loss, but with 90%+ of all purchases coming from Amazon, losing them as an affiliate was a fatal blow.
But that is to the PZ site. Behind PZ is a massive, custom coded data retrieval and searchable storage system that contains three years worth of product and price data from almost every major online retailer - both the technology and data is far more valuable than the PZ website.