I have never flown with them before. I checked in online for a flight tommorrow. I had already bought an aisle seat for $10 in June. So on the web page today they are offering seat changes and I see all but one big seat open , offered for $15. So I click for one leg and it shows $10 and $5 will be charged. So I took both legs at $5 extra. I searched this and I never found anything about this, I thought thee seats were always $50. I just checked my statement and I was charged only $10. Is this something new?