Form you don't seem to know the difference between the ITF women's circuit and the WTA women's tour.
Let me explain.
The International Tennis Federation (ITF) women's circuit is like the minor leagues of tennis.
The ITF events have 5 levels. $10,000, 25k, 50k, 75k and 100k tournaments.
Finalists of the 25k tournaments get entry into the qualifying draw of a lower WTA Tier 4 or 3 event.
Finalists of the 50k or higher tournaments get a wild card into the main draw of a lower WTA Tier 4 or 3 event.
The Women's Tennis Association (WTA) tour events have 5 levels in rising order. Tier 4, Tier 3, Tier 2, Tier 1 and Grand Slam events.
So 5 tiers for the minor leagues, ITF women's circuit, and 5 tiers for the major leagues, the WTA women's tour!