Well actually in the past 2 years. In September 2004 I upgraded from an American Express Air Miles card to an American Express Air Miles GOLD card. I have no recollection of why I did it. The only explanation I can come up with is that I somehow thought that there was no annual fee or something. I honestly cannot remember why I upgraded to the GOLD card. I stopped using my AMEX card a couple months ago and have been meaning to cancel it outright (actually I kind of thought I did, ok, so I’m a bit disorganized). Today, I got a statement in the mail saying that I owe them $50 for “Membership Fee.” This next part I feel really stupid about… I called AMEX and asked them why I got charged this fee. The lady didn’t really know but she said according to my account there was a fee, but the call ended quickly because apparently their main servers were down so she couldn’t get any more information. After I got off the phone I opened up Gnucash because I wanted to see if I had been charged this before. It turned out I was charged $50 in September 2005 as well! God dammit I had a $50 annual fee card and I didn’t even know it. I’m so embarrassed about it…anyways, I’m going to pay the $50 fee and cancel the card ASAP.
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is the value of one mile and
is the number of miles earned in our year. Assuming
(conservative), solving we get
. Assuming a higher value per mile (
) we get
. The latter value works out to $700/month, the former works out to $1400/month. So we would have to spend somewhere around that much per month on our credit card just to break even and make the card worthwhile. I do not think that is going to happen since we have stopped using our credit cards altogether, except when absolutely necessary (online purchases).