As for the price field, one way or another it has not been worked out, for vacancies it generally does not work correctly. According to statistics, it does not matter whether you have sales or not, but this is already common practice, those who are on the project are constantly interested in such information, the number of vacancies, goods, and so on, if the projects are for one-time use, then of course!
For example, the assembly of the Service will be released soon, this is just the case where people will use it all the time, but users do not have a clear picture.

By the way, there is also a system of quick notifications, such as a Pusher or a OneSignal! It would also be nice, a full-fledged chat in real time, for example, on a node!