If I were you I would consider going in the other direction.
eClinicalWorks -> AC.
For one thing the 500 monthly is probably because they have the Hosted Plan. You may be able to reduce that if you are willing to take on the responsibility of managing your own IT infrastructure.
"The illiterate of the 21st century will not be those who cannot read and write, but those who cannot learn, unlearn, and relearn." ~ Alvin Toffler
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