Email list for sale...cheap

I have a list of first name, last name email postal city state zip IP date/time stamp and source (gender, dob and phone is included on roughly half the records). From jan 2010 to present we have roughly 120 million records. Open rates are dependent upon campaign, but we have seen open rates as high as 20% (abnormal) and as low as 2% (abnormal). typically, we are around 7-12% open and 1% click through. the server we use is whitelisted and we clean our names so there few to zero spam traps within our data. . If you are interested in buying all or any of our data, please let me know. We dont mail to our data any longer and only provide appending services, so it is ready to be mailed to regularly. We are also looking for data to buy as well, but we would need a sample of roughly 500k to run against our file. Thanks