Hi, 728x90 ad slot: $150/month, $100/15 days 125x125 ad slot: $30/month traffic from google images, yesterday got 2100+ unique visitors & increasing day by day. here is analytics screenshot, can add ur email to verify analytics. let me know if interested.
How about a zapunited ad widget below you pictures? Unobtrusive but a very successful ad format, please feel free to check some examples: http://www.zapunited.com/help/publishers