I've lived in my house for 3 years and just recently purchased a 50 pint dehumidifier at an auction for $40.00.
WOW.. I set it to middle (not too dry, not too wet, and on whisper mode, and in one day it filled up.
Now it takes about 3 days to fill but its amazing how much humidity we have in our basement. Between my computers and this dehumidifier, I can definitely tell the air is warmer down there, but its not a bad thing at all.