Tap washers

I went to buy tap washers at Thrifty link in Bourke Street, so I could fix my friend Jill's dripping taps. Now, maybe I haven't bought tap washers for a while but, you know, I think I have. $5.95 for two tap washers. Two tap washers? Nice and neatly packed into their own cryogenically sealed packet, with all the colour and movement you'd expect from such 21st Century packaging. But? 

Tap washers used to be 30 cents? Didn't they? Not so long ago.

So, either I'm losing my memory (mind) (interesting life, if this is what I've got to write about) or Thrifty Link ain't living up to its name.

I guess, I should check my facts before I pass judgement?

How cheap am I? Monetarily and good dead wise?