We are a reseller for ActiveCampaign. The fees are based on the number of contacts in the database. We provide the Professional level accounts which includes unlimited email sends, automations (auto responder or drip campaigns), and CRM. Here are the published ActiveCampaign fees:

ContactsMonthly Fee
1,000$75
2,500$125
5,000$169
10,000$250
25,000$399
50,000$520
75,000$600
100,000$700
150,00$750
200,000$800
250,000$933