I had a Yellow Book ad for the past 3 years and just now canclled it.
First year was a small 1/8 page ad. Cost was about $800/month. I think I got 2 calls from it the whole year.
Second I went bigger, I got a 1/4 page ad. Thought the problem the first year was my ad not being big enough. Cost on this was about $1200/month. I didn't even make $1200 the entire year from this one.
Third year ( you guessed it, I'm a sucker ) I figured I just need a bigger ad and I'll be all set, all the other EC's I know said they got plenty of calls from it. I went for a Half page, Professionally designed ad. Cost was $2000/month. I made about $400 for the entire year from this one.
After 3 times, I finally realized, The EC's I was listening to were not tracking the ads. The office help was probably not even bothering to track anything and just making up data. These guys actually think they got work from it. I've gotten more work from Bid clerk in 1 month than I got from Yellow Book in 3 years.
Yellow book cost for 3 years = $48,000 , total sales = less than $3000
Bid Clerk 2 months = $100 , total slaes = $4000
Area is South Florida, there are about 3 or 4 1/2 Page ads and probably 4 or 5 smaller ones.
All I can say is if you are thinking about locking yourself into a 1 year ad contract with one of the books for $10,000 or more, make sure the people you are talking to actually know what they are talking about. Half of these guys are throwing $20,000 or more per year down the drain and don't even know it.
If it wasn't for referrals / repeat customers I would be out of business