By using KoorTickets instead of Ticketkantoor.nl a lot of money has been saved already.
...organiser 1 saved between €212,40 and €291,60 (230 transactions: 408 admissions, 99 other products)
...organiser 2 saved €47,20 (48 transactions: 89 admissions)
...organiser 3 saved between €66,70 and €89,10 (97 transactions: 144 admissions, 28 other products)
...organiser 4 saved €85,00 (121 transactions: 197 admissions)
...organiser 5 saved between €90,20 and €151,80 (159 transactions: 204 admissions, 77 other products)
...organiser 6 saved between €20,00 and €21,60 (24 transactions: 40 admissions, 2 other products)
...organiser 7 saved €244,30 (239 transactions: 411 admissions)
...organiser 8 saved €340,20 (82 transactions: 483 admissions)
...organiser 9 saved €63,30 (76 transactions: 126 admissions)
...organiser 10 saved €165,40 (143 transactions: 314 admissions)
...organiser 11 saved between €239,40 and €299,40 (305 transactions: 488 admissions, 75 other products)
...organiser 12 saved €57,80 (109 transactions: 154 admissions)
...organiser 13 saved €13,00 (22 transactions: 30 admissions)
...organiser 14 saved €46,30 (45 transactions: 86 admissions)
...organiser 15 saved €28,80 (32 transactions: 56 admissions)
...organiser 16 saved €0,80 (1 transaction: 1 admission)
...organiser 17 saved €52,80 (64 transactions: 106 admissions)
...organiser 18 saved €14,90 (23 transactions: 33 admissions)
...organiser 19 saved €4,00 (5 transactions: 5 admissions)
...organiser 20 saved €1,90 (1 transaction: 3 admissions)