Facebook Ooc Shocking Conversions

Howdy, I recently ran a PPC campaign on facebook which converted extremely badly. Id say EPC was in the region of 2p over around 2000 clicks. They cost substantially more than that (or would have done had it not been for a few vouchers). By contrast, clicks generted via ebay convert in the region of 25p and cost substantially less than that. The obvious answer is to stick with ebay, which I intend to, but id also like to diversify into other sources of traffic/revenue, and want to know if I am likely to experience similar results over other PPC networks like adwords. What put me off going there intially was the competition in the mobile phone sector, where there was hardly any on FB.
Any thoughts?

See original post by CMS2009