One thing I find notable about S3 today is that, while it used to drop in price reasonably often, there hasn't been a price drop in a full decade:
2006-03-14 $0.150/GB-month
2010-11-01 $0.140/GB-month
2012-02-01 $0.125/GB-month
2012-12-01 $0.095/GB-month
2014-02-01 $0.085/GB-month
2014-04-01 $0.030/GB-month
2016-12-01 $0.023/GB-month
Today it's still $0.023/GB-month.
I actually can't believe it hasn't gone up in the last couple of months.