How much does Swarm satellite cost?

Could you please provide some insight into the cost of a Swarm satellite? As an investor or enthusiast in the cryptocurrency and finance space, it's important to understand the financial implications of supporting such a project. Are there any estimates available on the overall cost of developing and launching a Swarm satellite, including any potential costs associated with maintenance and upgrades over time? Additionally, is there any transparency around how the funding for these projects is sourced and allocated?