For the Balance 20X IC2 is part of the PrimeCare coverage, which costs $49/year (Peplink | Pepwave Online Shop). Besides IC2 etc., PrimeCare also is a general extension of the warranty for another year.
I will not argue the merits of bundling the services (I expect IC2 by itself would have been $29/year, as it is for similar non-prime devices).
The additional (peplink) APs will each require IC2 subscriptions in order for them to be managed through IC2. The price varies by model, starting at $19/year for the AC One Mini (Peplink | Pepwave Online Shop)