I bought a pair of flipflops from The Pound Shop last year.
Well actually Mum bought them, to go to and from the shower block when we were on holiday.
I am still wearing them and she borrows them when she goes to have her toenails painted.
So by my reckoning, $20 flip flops better last me 13 years at current exchange rates...
Not knocking fancy footwear (anything over £10 is fancy for me).
I take a UK size 6, feel free to send me all kinds of expensive flip flops for my 40th birthday. 1st July dontcha know.
Or used underwear of course