We just bought a G.E. refrigerator that has the water filter in it. About how often do you have to change the filter. I think the manual says approx. 6 mos., the salesman said he can go for about a year. What has your experience been? (I sort of doubt that we'll use the filtered water for cooking pasta, making sun tea, etc., probably just for a refreshing glass of H2O) Also, G.E. sells those filters for $35 a pop. Can they be had elsewhere for less.