The other thing that seems obvious is that the work involved in cleaning these things is just not worth the $2-3. I've got more money than time usually!
Also, don't like with my luck that I may not get it clean and then what good are they doing? The guy at my LHS and a few of you may think it's crazy but I'm with the guys that are just throwing them away. Sounds like the schedule is to throw them away after each day. I'll probably check them to see if I get two practices out of them since I'm using the ebay covers but I would guess two days is the limit. Seems like a lot less hassle and a lot more insurance.