I just upped my spending limit to $3 a few days ago and expected triple the traffic vs $1. Instead, I got roughly $1.25 worth of traffic a day. Heh, whoops. It turns out that I was so successful at minimizing my CPC I am now able to pay for all the clicks my ads would generate in a day, with money left over. Time to see if I can’t increase the CTR a bit without increasing my cost per conversion that much…
Here’s my rolling weekly average:
Ad Group #1 (pitching BCC to someone searching for ways to make bingo cards): 600 impressions, 8% CTR, 23% conversion, .52 CPA
Ad Group #2 (pitching Dolch bingo cards, my killer app, to people searching for Dolch word lists): 2100 impressions, 1.5% CTR, 17% conversion (a bad week), .46 CPA
As a stopgap measure I’ve turned off the position preference, which should see my ads return to the #1 spot as well… We’ll see if that helps conversions or not.
That reminds me, I should start advertising in Australia/Great Britain soon.