You don't set your minimum bid - you only set your maximum bid. But still, the question is a rather odd one - are you looking for a guide price as to what you should be setting your max CPC to? Or are you asking what is the lowest minimum bid you've ever achieved?
the lowest minimum bid I have ever achieved was £0.02 - however this is not reflective of what I actually pay per click - that minimum bid only shows me how much I need to pay to appear in google's sponsored listings. I normally pay much more to achieve top spot.
my lowest ever is .02 on search and .01 on content. But that does not mean you can get this for every keywords if you bid on mortgage, you will never have a .02 bid, hell you probably wont even get a $5 bid to show up
I'll have to go back to work on my landing pages and ads...I thought I had them pretty well targeted, but there's clearly still some room for improvement. Jay
I can get a penny on keywords, but the keywords suck and nobody else wants them. It's not always about getting penny bids, you can make money paying a lot more then that per click.