Which for the mathematically disinclined is $46.50/month/user
The nice thing about this service is that it doesn't seem to have a lower limit. The bad thing about this service is that unless you already know how to implement a two part syncing back end (with it's own pros/cons/issues) then ALL of your users have to be subscribed to this, not just the ones that need remote access. That's based on their description that says the primary backend is located on the cloud server.
For example, depending on what would make sense for us, we would only need 13 users to have remote access. Right now we would have 19 users and in the future a couple more here at the shop that wouldn't need remote access. So, we would need to pay an extra $240 - $320/month for unneeded remote capabilities.
A quick google shows one company selling virtual (cloud) servers starting at $5/month. That may even be sufficient for our limited needs but a reasonable setup seems to start at $20/month (2 CPU, 4GB Ram, 80GB storage, 4TB bandwidth). So, you are paying for the ease of deployment/maintenance of a cloud server system. So, the question becomes, are there services out there that can manage an SQL setup for you if you (me) are not capable or able to manage the database ourselves. I'm not sure if our contracted IT company would manage a virtual server for us or how much they would charge to do so.
A quick back of napkin analysis....Our 20 user setup would be $828/month. Buying a server through our 3rd party IT company we already contract with would be roughly $12K. Their server maintenance is roughly $50/month if I recall. So, break even vs. this service is about 16 months assuming they can manage the SQL part of it too. The other way is paying for our own cloud server at $20/month. Now, how much would our IT company charge us to maintain it for us. I have a hard time believing they would charge us $800/month.
It's an interesting concept to be sure depending on ease of migration, but the costs are still pretty significant for the typical Access user (imo).