Move to a cloud based software and month SaaS billing
You should move to a Cloud based service with Subscription billing. Storage and accounts could be accessed by any browser and would not need to be updated on our personal computers but stored in our accounts on your cloud servers. This model would also open up your software to individuals who would be willing to invest a smaller amount monthly ($20-$60??) but not such a large upfront investment. $1000-$2300. Every person that adds your service will add to your ongoing revenue. Its is the model that all corporations are moving towards. Please consider. I personally am willing to invest in a monthly subscription of Logos.