Have you considered affiliate marketing? This is pay for performance marketing where you pay affiliate publishers a small commission on sales that they drive to your site. If they don't sell - you don't pay. Canbuy.ca is an example of a website that works on the affiliate basis. They have a one page about affiliate marketing - check it out - it isn't difficult to setup.Good luck!
http://www.canbuy.ca/affiliatemarketing101.asp