Texas has 8.25% but New Mexico is 5.125%
Sunland Park, NM (which is part of El Paso, TX metro are has an additional city+county tax of 2.125% so the taxes are the same as in Texas (the numbers may be slightly off, but the final tax rate is very close to Texas)
I guess that’s true. When you go through the website they have many warnings when you select basic economy about the carry on not being included, I have to basically budget +$60 each time I’m looking for flights because they always show the basic economy first