Arccos free trial - am I missing something here?

I've just bought a G425 hybrid which has an inbuilt Arccos sensor in the grip. I downloaded the app which is offering me a free 45 day trial. They will send me a set of sensors for the rest of my clubs as part of the free trial.

After the 45 days, they will take a $119 annual subscription.

There is no mention of a cost for the actual sensors themselves.

Have they dropped charging for the sensors in favour of a subscription-only model, or will I also get hit with a charge for them?