 If you're an Airbnb host, you know hidden costs eat right into your earnings. Cleaning fees, supplies, and maintenance can rack up hundreds of dollars a month. Want to maximize your profits? Offer add-ons to your listings. Airport transfers, guided tours, bike rentals, grocery delivery, even cooking classes. These are all services you can charge extra for and tack onto your Airbnb listing. So how do you price them? Start by checking out what similar services cost in your area. Look at local businesses and other listings.