If you want to outsource your company’s online marketing then you need to consider 3 types of costs.
Start-up costs: If you are advertising the first time then several things need to be set up. Just think about ad accounts, setting up website tracking and writing ads.
Management costs: Once the campaigns are running, they obviously need to be thoroughly monitored and optimized. For this, you need to provide several working hours per campaign per month per channel.
Advertising budget: Very flexible depending on what you want to achieve. For small local campaigns, a few hundred dollars a month can go a long way. If you want to target more broadly, you will have to provide more budget. There is also a big difference in the budget required for each marketing channel chosen.