don't even think about it tim! Obviously there's NO buyers in you area who are "waiting to come and view".
Yes, I've been there with my last car... Cost me £35 for the ad, there turned out to be no potential buyers, the ad took nearly a month to appear on their website (by which time the car was sold elsewhere) and I never had a single enquiry from it.
Now I just think of myself as a certified muppet for falling for the sales patter, even tho it was pretty convincing!