I’m speaking as someone who has never had to price anything. To me it feels like a service that doesn’t give me monthly benefit (i.e. frequent recurring usage like my iCloud storage or Netflix etc) as I wouldn’t use it often enough, so paying monthly just feels like a waste to me. The difference between monthly rate if bought as a year and per month is pretty big to incentivise people to pay up for a full year - I personally dislike this strategy, it implies to me that I have to pay a 50% markup just to have the option to change my mind after a month or two (to me this implies I might, so best to get all the money up front).

I think you want to incentivise long term ownership of the product (MRR->YRR) with a focusing of the price at yearly. It aligns more with financial years / tax filings and the general cadence of people looking at their finances.

Now as I say I have absolutely no experience and haven’t done any market analysis. So this is just my opinion.