A social media ad costs $2 per person reached and 60% purchase. a traditional media ad costs $0.10 per person reached and 2% purchase. which is more effective?

To know which is more effective, let's just put a fictional number of 100 purchase to test it.

Option A: $2 per person, 60% purchase

Option B: $0.1 per person, 2% purchase

For Option A, cost would be $200 and ended up in 60 purchases

For option B, cost would be $10 and ended up in 2 purchases (if the cost is lifted into $ 200, the purchases is 2 x10 = 20)

Which means option A is more effective.