Struggling to find the cheap keywords

Hey
Currently the only keywords that I am getting are costing me like 2 dollars per click, I want stuff that will cost around 60cents per click at most. How do I find these? Otherwise my budget is going to be eaten straight away.
My website is www.customcollars.net and I have been going for keywords like pet collars and leather dog collars.
Thanks

See original post by steve-cov