I can't really answer that because I have never paid more than 25 cents a lead without a sample, if a lead guy isn't willing to send a sample, I move on to the next guy. The more expensive the lead, the more horror stories I've experienced and heard over the years. There is no such thing as an exclusive lead, I've heard of guys buying packages, submissions, real time leads, etc for anywhere from $5-50 a lead or even more in some cases and the merchant telling them they were the 5th-6th guy to call them that day. The more expensive the lead, the more they are sold daily and the faster I run.