We purchased it shortly after buying our house in the summer of 2000. It cost us ~ $300, so that is roughly $30 a year now. Which is about $2.50 per month or $0.58 per week or $0.08 per day.* We would take it with us if we were to sell and move. It works really well still!
* These figures are just the initial cost of the system. We installed it ourselves, which was very easy. We have purchased approximately 4 of the two-pack low cost filters and 3 of the more expensive filters over this timeframe. They last a lot longer than we were led to believe!
As far as fluoride toothpaste is concerned, I don't usually buy it. I have in the past when Tom's of Maine switched the types they sold in the store where I purchased it. I didn't realize it at first. We finished those off and didn't worry about it, but I specifically look for fluoride-free toothpastes. All three of us have good, healthy teeth. DD is 9 and has zero cavities. She has never had fluoride on a regular basis.
"Kind words can be short and easy to speak, but their echoes are truly endless." - Mother Teresa
After researching filters, this seemed to be an excellent filter for a decent price. It doesn't have a tank like the RO undersink models, so it doesn't take up a lot of space either. We have pretty yucky municipal water (tons of chlorine/fluoride, etc.) and this makes the water taste like nothing--perfect.
I started searching for bottled water without fluoride and had no success. I figured I'd have better luck with a filter so I've been searching high and low for a filter that actually removes fluoride. I read an article that said most of the filters don't actually remove the fluoride unless it's distilled water. Is this true? Here's the article http://fullspike.com/nutrictionary/water/bottled-water-without-fluoride.asp
I'd like to find a good filter that removes the fluoride, as well as a fluoride free bottled water.