A directory ad like that one would be a total waste of money. However, you can get a free, more effective ad by listing in your state and city’s production directory. I imagine they are free, at least here in IL.
Anyone needing a studio the size of the PBS station is by definition “in the biz”. They know where to look. If they want to cover their bases they will Google: San Diego Video Studios. Your problem is your site will have low SEO compared to the studios that have been in business a long time and have tweaked their SEO, you will never, ever catch up.
What you can do with the seed money you were about to waste on that ad is to hire a Certified Google Adword Agency. These are consultants who have gone through Google’s course and know the intricate tricks for a Google Adword campaign. It is very complex to do it on your own so paying a hourly fee for a couple of hours to have it set up is worth it. This way when someone Googles “San Diego Video Studio” your PBS station’s ad will appear either on the top or side next to the competitors with great SEO. This is the only hope you have to appear on the same first page. If you need help you can email me privately. A friend of mine does it for car dealerships and there is no more competitive business than car sales. Google makes it seem easy but it isn’t, you need an experienced expert to set it up and monitor the first few months.
Also, make allies of the studios, somehow become their friend. When a client needs a studio and everywhere they inquire is booked for that day the clients will ask for their referral. Somehow arrange an agreement with them to trade referrals.
Our local PBS station tried what you are looking to do but priced themselves too high. Also, clients were afraid of being bumped at the last minute. In sum, what you are trying to do is very difficult because the station will have a fixed schedule of production times and they’re asking you to fill in the gaps with rentals. It would only work if you greatly under price your competitors. Also, most studio days need a pre-light or very early arrival on the shoot day, then at least a ten hour day, so I don’t see a PBS station studio being viable.
Good luck
Ned Miller
Chicago Videographer
http://www.nedmiller.com
www,bizvideo.com