This may be off-topic - a little
Name three things that have gone down in price in the past five years -
I can think of a couple things that have gone down in the past few years, but it isn't prices. :?
If we think percentage wise increases, I don't think fabric has increased as rapidly as some other products - I paid $8.00/yard at a LQS for some fabric in 1992 - and Mom paid $10.00 for some fabric with the "gold metallic" at a LQS in the same time frame.
I remember the prices because I just relocated the fabric and it had 1992 on the selvage and I only bought a "little of it" at the time because of the price.