Here are the results* from a 500-click solo ad I bought from Lucas Cepeda. You can find more reviews in my solo ad directory.
Clicks bought: 500
Clicks received: 597
Optin percentage: 45%
% Tier 1: 68%
Cost Per Optin: $.56
You can buy a solo ad from Lucas Cepeda here
*These are the results from my squeeze page and sales funnel. Your results may vary from mine.