If you charge a lot, you end up getting better clients, the kind that don't mind paying for a service that makes them a good return. Naturally, these smart people who know that good work comes at a price, are much better at paying invoices. You do great work and usually end up working with larger teams - where some members of the same team become a source of referrals.

Also, the perks of making good money as a "freelancer" is that you can pick who you work with and the types of projects you want to work on. Contrary to having to work on whatever comes along, you can enjoy your work.