How much does it cost to use Helium Network?

Can you provide me with a clear understanding of the costs associated with utilizing the Helium Network? Are there any upfront fees or ongoing charges that users need to be aware of? Additionally, does the cost of utilizing the network vary depending on factors such as usage volume or the type of device being connected? Understanding these costs is crucial for businesses and individuals alike who are considering adopting the Helium Network for their IoT needs.