Our average the past two years would be approximately $40,000 each year. We don't make truck payments and such, but that would include all insurances and stuff.
We travel but stay put in Florida for 3 to 4 months. Resort in Florida averages just over $50.00 a day. That would include eating out 2 or 3 times a week, one Alaska Cruise, and generally buying what we want when we want.
If you don't have bills or a stick house to worry about, I would say you can travel and do whatever you want to do as full timers and stay way under $50,000 a year.