I agree that you could probably charge considerably more for this, though I also agree with the poster in another thread about support expectations for a more business-class-priced piece of software.
You could do both: Keep selling the $45 version that maybe includes access to a general support forum, but sell a $299 version with premium support for one year. Then sell renewals for support agreements! It'll be worth it to most businesses to avoid the headaches of having to deal with self-hosted software on their own, and you'll have a good source of recurring income from existing customers.
You could do both: Keep selling the $45 version that maybe includes access to a general support forum, but sell a $299 version with premium support for one year. Then sell renewals for support agreements! It'll be worth it to most businesses to avoid the headaches of having to deal with self-hosted software on their own, and you'll have a good source of recurring income from existing customers.