DylanR is right about this and I would go a step further on current e harmony cost.
What separates current e harmony cost from the rest of the field is how quickly it starts asking for money.
About 50 profiles into the app, the pattern around what the real cost is after the trial became obvious.
If you bounced off this before, revisit the site and check how aggressively it pushes credits at you first this time.
The short checklist I use before trusting anything like current e harmony cost:
- Whether current e harmony cost shows you who has actually read a message
- How fast a report about current e harmony cost gets a human response