I recently purchased 4 sets of BuckyBalls when they were recently on woot. I'm pretty pissed that I did now and want to show my support to Zen Magnets and buy a set of theirs. They seem to have much better quality from everything I have read and seen, and can attest to BuckyBalls "flakes" now coming off in my hand after using the magnets for about 2 weeks.
From what I have heard, this company BuckyBalls made about $500,000 in sales from the woot sale (woot actually bought more from BuckyBalls on the day of the sale because demand was so strong), and $250,000 in sales on the day Google changed its logo to honor the Buckyball. Seems they may have grown too big for their britches and feel a sense of entitlement now.