Spirit Airlines is being really mean-spirited now.

On Monday the airline announced that, beginning on November 6, passengers who wait until they get to the boarding gate to pay the airline’s fee for checking a piece of luggage or carrying it onto the airplane will pay $100 per bag.

Passengers can pay lower luggage fees by paying earlier in the process, such as online , on the phone or at an airline kiosk. but there’s no way around paying something to carry-on or check a piece of luggage.

Spirit is the airline that advertises really low fares but often surprises unsuspecting customers with hefty added fees for everything from seat assignments to onb0ard drinks.  Beginning October 31, 2012, the airline will also begin charging a $2 fee for printing a boarding pass at an airline kiosk. (Since January there’s been a $5 fee to have a boarding pass printed by an agent at the airport.)

Spirit claims that separating out these – and a plethora of other fees – “empowers customers to save money on air travel.” You decide.

Here’s the new chart of fees for baggage

For now passengers flying on a Spirit Airlines flight are not charged a fee for taking aboard one personal item that fits under the seat.