Keep the bookings that come to you
Most campsites keep their Hipcamp and Pitchup listings, because they bring in campers who've never heard of you. The bookings worth moving are the ones from guests who already know you: repeat visitors, word of mouth and people who find you on Google.
On Hipcamp you pay 15% of each booking, including VAT. A campsite taking £20,000 a year through it pays about £3,000. When those guests book on your own website instead, Kipdown costs £490 a year and takes nothing from each booking.
Work out your own figures with the commission calculator, or read what campsite booking software costs across ten systems.