Here are the results* from a 100-click solo ad I bought from Daniel Madeira. You can find more reviews in my solo ad directory.
Clicks bought: 100
Clicks received: 135
Optin percentage: 50%
% Tier 1: 80%
Cost Per Optin: $.34
You can buy a solo ad from Daniel Madeira at daniel-madeira.com/soloads/
*These are the results from my squeeze page and sales funnel. Your results may vary from mine.