he cost of digital marketing includes in two stages
Learning Stage: In this stage, if you choose instructor-led course it will cost from $500 to $1000. If you choose self-learning course it costs only your time.
Practical Stage : At this stage, you need to practically work with different tools in A/B testing methodologies. most of the tools provide a limited or trial version for a limited time. so only running advertising campaigns needs a payment based on your target customers perspectives like age, gender, location and interests $200 to $250