When I buy traffic I try to get it as fast as possible, so users with dynamic IP's wont visit my site twice. Also it depends, because the website from which you are buying traffic from, may not be able to deliver 200k in one day (depending on the type of traffic you select to buy).
I'm willing to trade with you (
http://www.darxoul.com), please sign up at
http://www.darxoul.com/ttt-webmaster.php