you can
try adx - they have cpm/cpc banners, text links and IM ads for advertisers. Their CPM minimums are higher.
My CPM yesterday on the IM ad was $0.95. Best thing about them is while setting up your adzone you can can tell them what your goal CPM is, paste your Exoclick code as a backup tag, and when they can't meet your CPM goals they'll run your Exo ads instead