I bought a second pair of these today. If you like a shoe, buy two pairs and rotate wearing them. They will last much longer than wearing one pair out, then wearing the other. These boots are incredible.
If you like anything fashion, clothing or shoe related that will wear out before you get sick of wearing it, it is always wise advice to buy in multiples. I have done the same thing for shoes, shirts, pants, etc.
Shoe manufacturers are notorious for phasing out a particular style after only a few months of production, no matter how popular they are, but they are not the only ones who do this.
This is one of my pet peeves in life.