As the VO Strategist, I define effective marketing as the art and science of developing meaningful relationships. When you treat potential clients like a cash register and your marketing efforts are like a crowbar trying to pry that cash register open, it tends to not go the way you hope. Here's an example...

Have you ever gotten auditions that you didn’t want to do? Me? All the time. I get auditions from my manager, multiple agents, and regular clients pretty much every day and I often turn some down. Why? The rate is too low. Most of the time I just delete it but if the rate is outrageously low (like for a national chain) sometimes I’ll make mention. BTW often the voice seeker adds a note in the casting notice like, “We know this rate sucks but it’s the best we could negotiate.