Only 25 impressions per 0.12USD is not good rate.. Most site offering 1000 Impressions per 0.05USD. and your website also not so popular one. No Alexa rank. No pageviews. Do some hard work to get traffic. You'll get some good advertisers with good rates.
Thank's for your answer.
If you're interested you can send me a counter offer. I know that my website is a pretty new one but I hope to find some people who are interested in advertising on the page. And of course the traffic will rise within the next days and weeks.