One under mentioned resource you could take advantage of is PPV.
You can pay per views, pennies on the dollar.
The people viewing the ads are perfectly targeted people for your offer...
because you can choose which sites you "Pop up" on.

I have helped countless people well under the 10K budget to see a return while advertising. There are a lot of moving parts but if you know who wants what you have and where they are, it's only a matter of testing a bit to see a ROI.