Funny you reviewed these today. I literally just finished ordering a pair from Cambria Bike Outfitters (http://www.cambriabike.com), where they're on sale.

I've gotten annoyed at the short life of a pair of shoe covers. I've about worn out a pair in just the last month: the toes and heels are badly worn through in spots and the seams are starting to come apart. And they're not exacly a cheap pair, either. At $40/pair for shoe covers (give or take), at that rate it won't take long for the SH-MW80s to pay for themselves.

At least that's what I'm telling the wife, er, myself.