whats the niche of the site you are looking for?
I would like to buy banner with size 150 x 75 in your website which have Page Rank 4 and more
PR4 : $8/month
PR5 : $10/month
PR6 : $15/month
I would order for monthly based and pay by Paypal. Website must be TLD .com .net .org, not free host like wordpress or blogspot.com
Please PM me your site not here.