The material used by genuine Crocs seems to last much longer. My brother bought some knock-offs at the same time that I picked up a new pair. He wore through the soles in about two years while mine are still kicking after almost 8 years of near-daily use.
You can get the genuine ones for $18 to $35 on ebay depending on the color, so while I'm sure you can save some on clones it's not worth it for the durability and comfort.
You can get the genuine ones for $18 to $35 on ebay depending on the color, so while I'm sure you can save some on clones it's not worth it for the durability and comfort.