How many lookers does it take to convert into a buyer

[Kevin McIntosh]

In today's market conditions, how many lookers (real estate investors) would you say you have to get in front of to close a deal?

I know there may be way too many variables, but I'm really asking, based on deals you've had in the past, did you eventurally say, OK once I get more than x amount of lookers, if I haven't sold, it's time to drop my price or other.

i.e. what does x = ?