Large ads may be quite expensive, but depending on how many people see it, it could be a lucrative investment. Keep the ads short and simple, don't lose the customer's interest. Photos grab a reader's attention and can increase the effectiveness of your ad. Place the ad in the section where your clientele is most likely to see it. You may want to offer coupons as part of the ad.
Repetition is the key to radio advertising.
It is better to buy 20 spots on one station than one spot on 20 stations. Costs of ads vary according to the station and time of day. Pick stations that your customers are most likely to listen to. These may not be the major stations. You may consider sponsoring morning weather reports.