Currently ServiceBus is billed monthly per connection, with prices that can go lower with packs, but nevertheless far too expensive for some low traffic/usage scenario.
In my scenario the connection is between client applications and the Azure services, must be active all the time the application is working (normally 8 hours a day) and "real" communication between the two, interaction and data transfer, happens unfrequently and move little data.
In this scenario the current pricing strongly limit the chance to use the ServiceBus, even if it is an enabling feature.
A pricing model more proportional to time and usage would really help