You can buy IPv4 addresses on a second-hand market. A few years ago they were about $8 each, with a minimum of 256. Plus you need to pay an RIR member to hold t

You can buy IPv4 addresses on a second-hand market. A few years ago they were about $8 each, with a minimum of 256. Plus you need to pay an RIR member to hold them for you, which incurs about $50/year in RIR fees for Europe. So it's not a big deal yet.