Check out Luminati for example. They have a huge network of true residential IPs to exit traffic from, and you have to pay a hefty premium per GB of traffic to

Check out Luminati for example. They have a huge network of true residential IPs to exit traffic from, and you have to pay a hefty premium per GB of traffic to do so ($12.50 per GB for rotating residential IPs, but requires a minimum $500 commitment per month). The reason they can offer this is because they're exiting traffic through the users of the free Hola VPN Chrome extension.