Access to the abbey complex and Nieuwe Kerk is free. Climbing Lange Jan tower costs a small fee (approx. €5-€7).
Access to the main courtyard of the Middelburg Abbey complex, which includes the exteriors of the 'Old Middelburg Cathedral' remnants and the Nieuwe Kerk, is generally free of charge. You can walk through the grounds and enter parts of the Nieuwe Kerk without purchasing a ticket.
The primary cost associated with visiting is for climbing the Lange Jan tower. This typically costs a small fee, usually in the range of €5 to €7 per person. Children may have a reduced rate. Check the official website or local tourist information for the most current pricing. Any guided tours, if offered, might also incur an additional charge, but basic exploration remains largely free.