Here are the results* from a 100-click solo ad I bought from Paul Kosas. You can find more reviews in my solo ad directory.
Clicks bought: 100
Clicks received: 115
Optin percentage: 36%
% Tier 1: 64%
Cost Per Optin: $.80
You can buy a solo ad from Paul Kosas at PaulKosas.com
*These are the results from my squeeze page and sales funnel. Your results may vary from mine.