Roommate2go.com needs your input please!

We have this cool program that can check your credit, do a backround check and a sexual predator check to prequalify a potential renter when they create a profile on our site. Any ad that is marked as "PRE-APPROVED" receives a whopping 4350% increase in the volume of interested emails sent to them. The problem is we think it costs way to much at $49.95. At what price would it be a value to you to get yourself pre-approved? We would include 30 days of full e-mail membership with the program and top of page (toppost) listings. Would 19.95 work? OR???? Please help and let us know.