NIKI’s yearly tour

I just wanna ask…how common is this? Next year is NIKI’s fourth consecutive concert in my city. And I am assuming that Keshi will announce another concert tour any time soon. I know that the artists might be having fun doing this, but we don’t really know what happens behind close doors. Are the album production too expensive that they have to go on tour to pay for the expenses or they just like doing this? No hate, but NIKI’s last concert prices went from costing $130 for floor tickets to $50 for 2 floor tickets the day before the event.