ZOI

I would recommend End Developer level. Of course you may choose higher levels, but this one provides you with all the necessary access and licensing at minimal cost. The cost of annual membership at End Developer level is 30K USD. Additional details are:

• Any new member is obliged to join for 2 years, but then can decide to exit the organization.
• In case you leave ZOI you will keep the right to use ZBOSS with your developed products at no additional costs.
• Pricing can be detailed on the call