ZelloWork pricing can be found here.
A self-hosted option, On-premise Server, is available as a $5000 one-time license fee with $2000 per each 20-user-pack. Support is free the first year, but available thereafter for an additional annual fee.
Annual subscriptions are available, and provide a 15% discount.
Pricing is prorated daily. Admins can modify subscriptions to increase or decrease the number of users in a network at any time during the subscription for a prorated charge or credit.
Subscriptions may be canceled or paused at any time, and customers will receive a prorated refund for the time left in a subscription.