I have stayed with an old version of AC to avoid all of the upgrade issues. So, for years, I have been eprescribing with Allscripts (now called Veradigm). The basic version is $9/month. As Bert says, it is double entry but I don’t find it to be very cumbersome. I have always liked it better than AC/Newcrop.

https://eprescribe.allscripts.com/register/subscriptions

Donna