Simpli.fi will bring significant new demand to FBX, further driving up prices in its RTB auctions. The company is in the process of migrating 5000 already live campaigns to FBX. For those campaigns it provides full price transparency, disclosing "actual media, data, and platform costs" to clients. No arbitraging of media or data – strictly licensing fees.
Adding a second search retargeter is consistent with Facebook's preferred approach of loosing a thousand arrows and hoping a few of them hit the target. The FBX program now stands at some 15 companies – though not all are yet listed on the PMD page. The company is clearly betting that by introducing as many new sources of demand as possible, ad prices ad bid activity on the exchange will rise.
The risk for advertisers and FBX partners is that the steady influx of vendors combined with rising prices will hinder the value proposition associated with FBX, which has until now been lauded for low price relative to performance (i.e. strong ROI). It would seem inevitable that the low hanging fruit on FBX will eventually move higher in the tree as multiple bidders try to stake a claim on each of its 7 billion-plus rumored daily impressions.
What comes after the gold rush? We may be about to find out.