The only complaint I have about this is that the bars you turn to hold the cufflinks in place are rounded and short so occasionally, they slipped out.  I never lost one, but found myself having to readjust it now and then.  They work well with a lot of different color shirts I have and are simple, yet stylish, which is a combination I like.

You can find a much nicer pair for the price.  They aren't worth $30 to me, but if you can find them for $20, I'd say that's a good deal.