I disagree. The cymbal that I pictured above, a few posts back, sounds great and I've been unable to tell a difference between the sanded, repaired version and the original version. Of course over the years it has dried out a little bit, but my repair job didn't change the sound of the cymbal in any noticeable way. Now of course, the crack was small and I repaired it immediately after discovering it, so I would agree with you that you really can't salvage a cymbal with a significantly sized crack in it (i personally feel that cracks larger than a 1/4" are unrepairable using the sanding method). However, if you take a moment to examine your cymabls every now and then and immediately attend to any cracks that are starting, cymbals are certainly repairable. If you want to go out an pay $250 for a new crash, that's fine with me, but don't tell others that there is no hope when I have indeed fixed my own.
Additionally, I haven't cracked a cymbal in quite a while. I previously used 5Bs, but I moved down to a size 5A stick and it has made all the difference. In my previous post I mentioned that I've down this to about a dozen cymbals - I didn't specify that I wasn't the one that cracked most of those. I usually try to buy cymbals with small cracks from people on ebay and then repair them.
-so true.