I bought a pair in the Airport on my way to hols last year, they were €55 same as in the shops here. They are the most comfortable shoes i have ever worn. I got the shoes at Christmas and wore them all winter.
I’ve just bought two new pairs from lookatmycrazyshoes.com for £36 each same price on runningbear.com. They have all colours including the new jelly ones in mad colours like purple and orange.
I asked in Tully’s the 20% was off everything except fit flops. They are supposed to be a workout for your legs as you walk, i don’t know if this is true but I love mine.
If your buying on line I’d advise to try them on in a shop first to check the size.