Full Answer
WordPress-native cheapest: $9.5K total. GTM-based: $70K-145K. Custom: $111K-275K. Client-only: $360K opportunity cost.
Which solution is cheapest long-term?
Quick Answer
For WordPress: Transmute $9,540 over 5 years (all-in). GTM solutions: $70K-145K (subscription + developer). Custom: $111K-275K (build + maintain). Client-only: $0 upfront but $360K opportunity cost from data loss.