budget: above $50 Looking for traffic domains

Hi Guys.
We are looking to buy 200-300 domains with traffic.
we must need proof of earning via parking companies.
Budget per domain : 50-100 USD per domain. can increase if domain earning good.
Example : if domain is earning 5 USD per month we will buy domain for 50$
we need stats of atleast 3 months to analyse.
Thanks
Rgds
Riz M