I refilled for about a summer without a problem. It just got to where it didn't seem worth it to me. But then we never cooked enough with our table top propane to make it worthwhile. You may have an entirely different situation.
The majority of replies you are likely to get here will be very negative with little to back those opinions. Give it try, but research and read as much as you can about propane gas properties and fill techniques. You CAN do it safely.