Baggage fees are not included in your quote….please check with your airline for their current Baggage Policies and Fees.
Baggage fees are typically cheapest if you pay them when you use the airline’s online Check-In process 24 hours before you fly.
If you’re not tech savvy and don’t want to check-in using online services, you can pay at the counter…but don’t be surprised if its $10 or so more expensive per bag.
Also, most airlines now will only accept credit cards if you want to by something when you are in the air…..e.g. Food, cocktails, wi-fi…….so waiving a $20 to get another drink won’t help.