We cannot give a general statement on prices. The prices depend essentially on the following three factors: Size of data package, number of devices, contract duration and charging model (annual charging or lifetime fee). Additionally it depends on whether certain extra-services are wanted, like e.g. dedicated Service-Level-Agreements.
As a concrete example: a customer connecting 1,000 devices with a monthly data volume of 100 KB per device will pay, for a contract duration of two years, just 0.59 euros per device per month.