There is a list somewhere that displays some of the biggest online market spends - I'm unsure of it's accuracy but I will try and dig it out.
I spend $7,000-12,000 per month now, up from from just $1500-2,000 /month back in mid-2008. My new software program allows me to spend more and more without ever losing money. So I "rinse and repeat" all my successful campaigns. I went from a 75% campaign failure rate in 2008 to a 2% campaign failure rate so far in 2009.
Wow you spent a lot of money on Ads.... That's unbelievable! I'm curious, how many impressions you get if you spend 20$ per day? Totally 6,000$ a month? Why you spent those such a big money? Is your site about selling something or something? Is the result worth more than what you are doing? I love to hear to your review.