Probably a lot less than you think! There are variety of affordable on hold message plans & pricing, and typically a small monthly fee starting at around $59 can be all it takes to get a professional sound for your brand, enhance the caller on hold experience and drive revenues.
Length – if your callers typically wait 2 minutes at a time, then at least 2 minutes of programming should be the goal. The idea is to ensure the callers don’t hear repeated messages every time they call. A typical on-hold message is 4-8 minutes in length.

It doesn’t matter if you’re writing marketing copy or if you’re writing a comedy script; everything must stay on brand. Writing is about capturing your inner voice and sharing it with an audience. The same applies when you’re writing for a company, and its brand is its voice.
Corporate cost-cutting and new technology have resulted in the advent of automated systems that can make the on-hold experience even more frustrating. It can feel near-impossible to get a human on the phone these days, which a national survey conducted by Consumer Reports found to be Americans' second-greatest annoyance, after hidden fees but beating out inaccurate weather reports and dog poop. Green observes that often people call as a last resort, because something on the website wasn't clear, perhaps, and they really need an answer quickly. So callers are captive listeners, a state often associated with the gridlock of waiting, whether in line at a Starbucks, in a dentist's chair, or in the proverbial elevator making its slow way up.