I have a finance/business related blog and I would like to sell block of 6-9 125 pixel by 125 pixel ads similar to techcrunch and I am wondering what type of cpm rate I could get per ad. Thanks!
Why not use AdSense? AdSense on financial website will usually give you higher CPM than $10. If you still want to sell ads, I know some financial websites that are charging different amount depending on the type of ad. I can't say that I really know this well, but I'll give you at least an idea. For example, ads that are clicked more: like big box 250x250 are CPM $10. For your box you could maybe charge around $6, but it really depends on the position of the ad, and how likely is that someone will click on it. You can test this, and then adjust the CPM according to CTR.