Luckily, I've trained my GF as over the past 5 years, she's seen me go through 4-5 pairs. But I told her the Salk HT2-TL's that I will be getting shortly, amortized over 20 years, are like $0.56 per day. I said after you hear them once, you'd be glad to drop your loose change in a can to hear those babies each day compared to everything else you've heard!