I bought a solo ad from Denise Johnson for $45 for 100 clicks or $0.45 per click.
She promoted a site of mine called Simple Internet Marketing Formula which on average converts at about 33%.
I got 129 uniques (29 extra) and 32 optins for a conversion rate of 25% and a cost per subscriber of $1.41
You can buy a solo ad from her here
Have you bought a solo from her? Post your review below.