We don't know what you've read. TAP is quite normal.
In the economy cabin they divide their fares into four groups: Discount, Basic, Classic and Plus. See
https://www.flytap.com/en-us/booking...n/tap-products Make sure you choose wisely. For example, their Discount fare does not allow free seat selection before check-in, they charge $30 for that. Per person per segment. So if you are traveling as a group and seating together is important, take into account this extra charge or consider a Basic fare.