Hi my credits get deducted when i go from:

1. LONG-TAIL KEYWORDS to PEOPLE ALSO ASK
2. LONG-TAIL KEYWORDS to PEOPLE ALSO SEARCH

Then when i go back to LONG-TAIL KEYWORDS from PEOPLE ALSO SEARCH no credits are deducted, however anytime I go to PEOPLE ALSO SEARCH for the exact same keywords my credits get deducted again.

Is this normal? I think my credits will get used in one day if this is the true.

Also, when I am using LONG TAIL KEYWORDS and i apply any filter my account is deducted 25 credits just for applying a filter. Is this normal?

I haven't provided a review yet because I am trying to understand the credits and the value for using them.